Flat

a.	1.	Having an even and horizontal surface, or nearly so, without prominences or depressions; level without inclination; plane. Though sun and moon Were in the flat sea sunk. - Milton.
	2.	Lying at full length, or spread out, upon the ground; level with the ground or earth; prostrate; as, to lie flat on the ground; hence, fallen; laid low; ruined; destroyed. What ruins kingdoms, and lays cities flat! - Milton. I feel . . . my hopes all flat. - Milton.
	3.	(Fine Arts) Wanting relief; destitute of variety; without points of prominence and striking interest. A large part of the work is, to me, very flat. - Coleridge.
	4.	Tasteless; stale; vapid; insipid; dead; as, fruit or drink flat to the taste.
	5.	Unanimated; dull; uninteresting; without point or spirit; monotonous; as, a flat speech or composition. How weary, stale, flat, and unprofitable Seem to me all the uses of this world. - Shak.
	6.	Lacking liveliness of commercial exchange and dealings; depressed; dull; as, the market is flat.
	7.	Clear; unmistakable; peremptory; absolute; positive; downright. Flat burglary as ever was committed. - Shak. A great tobacco taker too, - that's flat. - Marston.
	8.	(Mus.) Below the true pitch; hence, as applied to intervals, minor, or lower by a half step; as, a flat seventh; A flat.
	9.	(Phonetics) Sonant; vocal; - applied to any one of the sonant or vocal consonants, as distinguished from a nonsonant (or sharp) consonant.
	10.	(Golf) Having a head at a very obtuse angle to the shaft; - said of a club.
	11.	(Gram.) Not having an inflectional ending or sign, as a noun used as an adjective, or an adjective as an adverb, without the addition of a formative suffix, or an infinitive without the sign to. Many flat adverbs, as in run fast, buy cheap, are from AS. adverbs in -ë, the loss of this ending having made them like the adjectives. Some having forms in ly, such as exceeding, wonderful, true, are now archaic.
	12.	(Hort.) Flattening at the ends; - said of certain fruits. Flat arch (Arch.) See under Arch, n., 2. (b). Flat cap cap paper, not folded. See under Paper. Flat chasing in fine art metal working, a mode of ornamenting silverware, etc., producing figures by dots and lines made with a punching tool. Flat chisel a sculptor's chisel for smoothing. - Knight. Flat file a file wider than its thickness, and of rectangular section. See File. Flat nail a small, sharp-pointed, wrought nail, with a flat, thin head, larger than a tack. Flat paper paper which has not been folded. - Knight. Flat rail a railroad rail consisting of a simple flat bar spiked to a longitudinal sleeper. Flat rods (Mining) horizontal or inclined connecting rods, for transmitting motion to pump rods at a distance. Flat rope a rope made by plaiting instead of twisting; gasket; sennit. - Raymond. Flat space (Geom.) See Euclidian space. - Knight. Flat stitch the process of wood engraving. Flat tint (Painting) a coat of water color of one uniform shade. To fall flat to produce no effect; to fail in the intended effect; as, his speech fell flat. Of all who fell by saber or by shot, Not one fell half so flat as Walter Scott. - Lord Erskine.
adv.	1.	In a flat manner; directly; flatly. Sin is flat opposite to the Almighty. - Herbert.
	2.	(Stock Exchange) Without allowance for accrued interest.
n.	1.	A level surface, without elevation, relief, or prominences; an extended plain; specifically, in the United States, a level tract along the along the banks of a river; as, the Mohawk Flats. Envy is as the sunbeams that beat hotter upon a bank, or steep rising ground, than upon a flat. - Bacon.
	2.	A level tract lying at little depth below the surface of water, or alternately covered and left bare by the tide; a shoal; a shallow; a strand. Half my power, this night Passing these flats, are taken by the tide. - Shak.
	3.	(Railroad Mach.) Something broad and flat in form
	4.	The flat part, or side, of anything; as, the broad side of a blade, as distinguished from its edge.
	5.	(Arch.) A floor, loft, or story in a building;
	6.	(Mining) A horizontal vein or ore deposit auxiliary to a main vein; also, any horizontal portion of a vein not elsewhere horizontal.
	7.	A dull fellow; a simpleton; a numskull. Or if you can not make a speech, Because you are a flat. - Holmes.
	8.	(Mus.) A character [$] before a note, indicating a tone which is a half step or semitone lower.
	9.	(Geom.) A homaloid space or extension.
v. t.	1.	To make flat; to flatten; to level. [imp. & p. p. Flatted ; p. pr. & vb. n. Flatting .]
	2.	To render dull, insipid, or spiritless; to depress. Passions are allayed, appetites are flatted. - Barrow.
	3.	To depress in tone, as a musical note; especially, to lower in pitch by half a tone.
v. i.	1.	To become flat, or flattened; to sink or fall to an even surface.
	2.	(Mus.) To fall form the pitch. To flat out to fail from a promising beginning; to make a bad ending; to disappoint expectations.

Noun	1.	flat - a level tract of land
	2.	flat - a shallow box in which seedlings are started
	3.	flat - a musical notation indicating one half step lower than the note named
	4.	flat - freight car without permanent sides or roof Synonyms: flatbed, flatcar
	5.	flat - a deflated pneumatic tire Synonyms: flat tire
	6.	flat - scenery consisting of a wooden frame covered with painted canvas; part of a stage setting
	7.	flat - a suite of rooms usually on one floor of an apartment house Synonyms: apartment
Adj.	1.	flat - having a horizontal surface in which no part is higher or lower than another; "a flat desk"; "acres of level farmland"; "a plane surface" Synonyms: level, plane
	2.	flat - having no depth or thickness
	3.	flat - not modified or restricted by reservations; "a categorical denial"; "a flat refusal" Synonyms: categoric, categorical, unconditional
	4.	flat - stretched out and lying at full length along the ground; "found himself lying flat on the floor" Synonyms: prostrate
	5.	flat - lacking contrast or shading between tones Antonyms: contrasty - having sharp differences between black and white
	6.	flat - lowered in pitch by one chromatic semitone; "B flat" Antonyms: natural - of a key containing no sharps or flats; "B natural" sharp - raised in pitch by one chromatic semitone; "C sharp"
	7.	flat - flattened laterally along the whole length (e.g., certain leafstalks or flatfishes) Synonyms: compressed
	8.	flat - lacking taste or flavor or tang; "a bland diet"; "insipid hospital food"; "flavorless supermarket tomatoes"; "vapid beer"; "vapid tea" Synonyms: flavorless, flavourless, insipid, savorless, savourless, vapid, bland
	9.	flat - lacking stimulating characteristics; uninteresting; "a bland little drama"; "a flat joke" Synonyms: bland
	10.	flat - having lost effervescence; "flat beer"; "a flat cola"
	11.	flat - not increasing as the amount taxed increases Synonyms: fixed
	12.	flat - not made with leavening; "most flat breads are made from unleavened dough" Synonyms: unraised
	13.	flat - parallel to the ground; "a flat roof"
	14.	flat - without pleats Synonyms: unpleated
	15.	flat - lacking the expected range or depth; not designed to give an illusion or depth; "a film with two-dimensional characters"; "a flat two-dimensional painting" Synonyms: two-dimensional
	16.	flat - (of a tire) completely or partially deflated
	17.	flat - not reflecting light; not glossy; "flat wall paint"; "a photograph with a matte finish" Synonyms: mat, matt, matte, matted
	18.	flat - lacking variety in shading; "a flat unshaded painting"
Adv.	1.	flat - at full length; "he fell flat on his face"
	2.	flat - with flat sails; "sail flat against the wind"
	3.	flat - below the proper pitch; "she sang flat last night"
	4.	flat - against a flat surface; "he lay flat on his back"
	5.	flat - in a forthright manner; candidly or frankly; "he didn't answer directly"; "told me straight out"; "came out flat for less work and more pay" Synonyms: straight, directly
	6.	flat - wholly or completely; "He is flat broke"

1.		flat - Lacking any complex internal structure. "That bitty box has only a flat file system, not a hierarchical one." The verb form is flatten. Usually used pejoratively (at least with respect to file systems).
2.		flat - Said of a memory architecture like that of the VAX or Motorola 680x0 that is one big linear address space (typically with each possible value of a processor register corresponding to a unique address). This is a Good Thing. The opposite is a "segmented" architecture like that of the Intel 80x86 in which addresses are composed from a base-register/offset pair. Segmented designs are generally considered cretinous.
3.		flat - A flat domain is one where all elements except bottom are incomparable (equally well defined). E.g. the integers.

3-D, Pullman, Pullman car, abeyant, absolute, absolutely, absonant, accented, accidental, accommodation, accordant, accumbent, achromatic, achromic, act drop, admitting no exception, alabaster, alike, alkali flat, all-out, alluvial plain, alveolar, anemic, apace, apartment, apathetic, apical, apico-alveolar, apico-dental, arid, arrowlike, articulated, asbestos, asbestos board, ashen, ashy, assimilated, at full length, at full speed, at once, atonal, automatic, back, backdrop, baggage car, balanced, baldly, bank, bar, barren, barytone, basin, bated, batten, beat, betting house, betting parlor, bilabial, billiard table, blah, bland, blank, bled white, bloodless, bog, bony, border, boring, bottomland, bowling alley, bowling green, boxcar, brashly, brazenly, breve, broad, broke, bushveld, busted, caboose, cacophonous, cacuminal, cadaverous, campestral, campestrian, campo, car, carriage, casino, cataleptic, catatonic, categorical, categorically, central, cerebral, certain, chair car, chambers, champaign, champaign country, characterless, checked, chloranemic, clear, clerestory, close, cloth, coach, coal car, coastal plain, cold, cold-water flat, collapsed, colorless, common, commonplace, complete, completely, conclusive, consistent, consonant, consonantal, constant, continuant, continuous, coral reef, couchant, couche, coulisse, counterweight, covered waggon, cracked, crawling, creamy, crib, crotchet, crouched, cubic, curtain, curtain board, cyclorama, damped, dampened, day coach, dead, dead flat, dead level, dead straight, deadened, deadly pale, deathly pale, debased, decided, decisive, decor, decumbent, definite, definitely, definitive, deflated, delicate, delta, demisemiquaver, dental, depressed, desert, determinate, diaphonic, digs, dilute, diluted, dim, dimensional, dimmed, diner, dinghy, dingy, dining car, direct, directly, discolored, disconsonant, discordant, disharmonic, disharmonious, dismal, dissimilated, dissonant, dominant, dominant note, dopey, dormant, dorsal, double whole note, down, downright, downs, downy, drab, draggy, draped, drawing room, drearisome, dreary, drop, drop curtain, dry, dryasdust, dulled, duplex, duplex apartment, dusty, earth, effete, eggshell, eighth note, elephantine, empty, enharmonic, enharmonic note, entire, entresol, equable, equal, esplanade, etiolated, evenly, exact, exactly, explicit, express, exsanguinated, exsanguine, exsanguineous, fade, faded, faint, fallow, featureless, fell, fen, final, fire curtain, firm, first floor, fixed, flat, flat broke, flat country, flat out, flat-chested, flat-out, flatcar, flatland, flatly, flats, flattened, flatways, flatwise, flavorless, fleshless, flipper, floor, flush, ford, forthwith, foul, fourth-dimensional, front, gambling den, gambling hall, gambling hell, gambling house, gaming house, gangling, gangly, garden apartment, gaunt, gawky, ghastly, glabrate, glabrescent, glabrous, glass, glide, global, gloss, glossal, glottal, gondola, grass veld, grassland, grating, gray, groggy, ground, ground floor, groveling, gruelly, guttural, haggard, half note, hanging, hard, harsh, heath, heavy, hell, hell for leather, hemidemisemiquaver, high, ho-hum, hollow, homaloid, homaloidal, homogeneous, horizontal axis, horizontal fault, horizontal line, horizontal parallax, horizontal plane, horizontal projection, horizontally, hueless, humdrum, hypochromic, ice, immediately, immelodious, immutable, implicit, in a line, in abeyance, in suspense, inactive, inane, inappealable, indifferent, indisputable, indubitable, inert, inexcitable, inharmonic, inharmonious, intonated, invariable, iridescent, irrevocable, irrevocably, ivory, jejune, joint, knee-high, knocked flat, labial, labiodental, labiovelar, lackluster, laid low, lande, languid, languorous, lank, lanky, latent, lateral, lax, leaden, lean, lean-fleshed, lean-looking, ledge, leiotrichous, lengthways, lengthwise, level line, level plane, lifeless, light, like a shot, like greased lightning, lineal, linear, lingual, liquid, livid, living quarters, llano, local, lodgings, logy, lolling, lounging, low, low-built, low-hung, low-level, low-leveled, low-lying, low-set, low-spirited, low-statured, lowland, lowlands, luggage van, lunar mare, lurid, lusterless, lying, lying down, mahogany, mail car, mail van, marble, mare, marsh, mat, matte, matter-of-fact, meager, mealy, mean sea level, measured, mechanical, mellow, mesa, mesilla, methodic, mezzanine, mezzanine floor, mid, mild, milk-and-water, minim, monolithic, monophthongal, monotonous, moor, moorland, mother-of-pearl, muddy, muffled, mundane, musical note, musicless, muted, nacreous, narrow, nasal, nasalized, natural, neap, neutral, nonmelodious, note, occlusive, of a piece, off, off-key, off-tone, on a level, on the run, oofless, opalescent, open, open country, openly, ordered, orderly, ordinary, out of pitch, out of tone, out of tune, out-and-out, outright, outspread, outstretched, overthrown, oxytone, palace car, palatal, palatalized, pale, pale as death, pale-faced, pallid, pampa, pampas, pappy, parlor car, parterre, passenger car, passive, pastel, pasty, patent note, patinaed, pearly, pedestrian, peneplain, penthouse, peremptory, perfect, persistent, pharyngeal, pharyngealized, phlegmatic, phonemic, phonetic, phonic, pitch, pitched, plain, plainly, plains, plane, plateau, platform, playa, plodding, poetryless, pointless, poky, ponderous, poolroom, positive, positively, posttonic, prairie, prairies, precise, precisely, procumbent, prone, proportional, prosaic, prosing, prostrate, prosy, pulpy, punctured, quarter note, quaver, quickly, quiet, rag, railroad flat, railway car, rapidly, raucous, rawboned, reclining, rectilineal, rectilinear, recumbent, reef, reefer, refrigerator car, regular, rental, report, reposing, responding note, resupine, retroflex, rez-de-chaussee, right, robotlike, rolled, roomette, rooms, round, rounded, ruler-straight, runty, ruptured, sad, sallow, salt flat, salt marsh, salt pan, sandals, sandbank, sandbar, sapless, satin, savanna, savorless, scene, scenery, scraggy, scrawny, screen, sea level, sea of grass, sebkha, sedentary, semibreve, semigloss, semiquaver, semivowel, set of rooms, shallow, shallows, shaped note, sharp, shelf, shoal, shoal water, short, shrill, sickly, side scene, silk, simple, sixteenth note, sixty-fourth note, skeletal, skinny, slack, sleeper, sleeping, slide, slow, sluggish, slumbering, smoker, smoking car, smoldering, smooth-shaven, smooth-textured, smoothed out, smoothened, smothered, sober, soft, soft-colored, soft-hued, softened, solemn, somber, sonant, sordo, sour, space, space-time, spare, spatial, spatiotemporal, speedily, spherical, spiccato, spiceless, spidery, spindling, spindly, spiritless, sporting house, sprawled, sprawling, spread, spread out, squashed, squashed flat, squat, squatty, stable, staccato, stage screw, stagnant, standard, standing, static, steadfast, steady, steppe, steppes, stereoscopic, sterile, stiff, stifled, stockcar, stodgy, stone-broke, stony, stooped, stopped, story, straight, straight-cut, straight-front, straight-out, straight-side, strand, strapped, streamlined, street floor, stressed, stretched out, strident, strong, studio, stuffy, stumpy, suave, subdued, subtle, suite, superficial, supine, surd, sure, surface, sustained note, swamp, sweet, swiftly, syllabic, systematic, tab, table, tableau, tableland, tabloid, tabular, tallow-faced, tame, tank, teaser, tedious, tender, tenement, tennis court, tense, tercet, terrace, thick, thin, thin-bellied, thin-fleshed, thirty-second note, three-dimensional, throaty, tidal flats, tired, tiresome, tonal, tone, toneless, tonic, tormentor, torpid, total, transformation, transformation scene, tree veld, triplet, triplex, trodden, trodden flat, truck, true, tundra, tuneless, twangy, twiggy, two-dimensional, unaccented, unambiguous, unaroused, unbending, unbent, unbowed, unbroken, unchangeable, unchanged, unchanging, uncircumscribed, uncolored, uncompromisingly, unconditional, unconditioned, uncurved, undeflected, undersized, underweight, undeviating, undifferentiated, undistorted, undiversified, undoubting, unelevated, unembellished, unequivocal, unexciting, unflavored, unhampered, unharmonious, unhesitating, unidealistic, uniform, unimaginative, unimpassioned, uninterrupted, unlimited, unlively, unmelodious, unmistakable, unmitigated, unmodifiable, unmodified, unmusical, unpalatable, unpoetic, unpolished, unqualified, unquestionable, unquestioning, unrealistic, unreserved, unrestricted, unromantic, unrough, unroughened, unrounded, unruffled, unsavory, unshiny, unstressed, unswerving, untunable, untuned, untuneful, unturned, unvaried, unvarying, unwaivable, upland, upright, utter, utterly, van, vega, velar, veld, velvet, vertical, vocalic, vocoid, voiced, voiceless, volumetric, vowel, vowellike, waggon, wan, washed-out, washy, water level, watered, watered-down, watery, waxen, weak, weald, wetlands, whey-faced, white, whole, whole note, wholly, wide, wide-open spaces, wing, wingcut, wishy-washy, without delay, without exception, without reserve, wold, woodcut, wooden