Null

a.	1.	Of no legal or binding force or validity; of no efficacy; invalid; void; nugatory; useless. Faultily faultless, icily regular, splendidly null, Dead perfection; no more. - Tennyson.
	2.	Having a value of zero; as, of null utility.
	3.	(Math.) Empty; having no members; as, the null set.
	4.	(Computers) Unassigned or meaningless; - a special value given to variables, especially pointers or logical variables, indicating that it is meaningless and cannot be used in computation; as, an uninitialized pointer in "C" is given a null value. The actual value that is stored in memory to indicate the null condition may vary with the computer language used.
n.	1.	Something that has no force or meaning.
	2.	That which has no value; a cipher; zero. Null method (Physics.) a zero method. See under Zero.
v. t.	1.	To annul.
n.	1.	One of the beads in nulled work.

Noun	1.	null - a quantity of no importance; "it looked like nothing I had ever seen before"; "reduced to nil all the work we had done"; "we racked up a pathetic goose egg"; "it was all for naught"; "I didn't hear zilch about it" Synonyms: goose egg, nada, naught, nil, nix, nothing, zero, zilch, zip, aught, cypher, cipher
Adj.	1.	null - lacking any legal or binding force; "null and void" Synonyms: void

NULL. Properly, that which does not exist; that which is not in the nature of things. In a figurative sense it signifies that which has no more effect than if it did not exist. 8 Toull. n. 320.

(programming)

null - A special value used in several languages to represent the thing referred to by an uninitialised pointer. A special value that may be stored in some database columns to represent an unknown, missing, not applicable, or undefined value. Nulls are treated completely differently from ordinary values when evaluating SQL expressions and there are several SQL constructs for dealing with nulls.

aimless, bad, bare, barren, bland, blank, bleached, characterless, clear, designless, devoid, empty, existless, featureless, garbled, hollow, importless, inane, ineffective, ineffectual, inefficacious, insignificant, insipid, invalid, lacking, meaningless, minus, missing, negative, nonconnotative, nondenotative, nonexistent, null and void, phatic, purportless, purposeless, scrambled, senseless, unexisting, unmeaning, unrelieved, unsignificant, useless, vacant, vacuous, void, white, with nothing inside, without being, without content, worthless