Stopper

n.	1.	One who stops, closes, shuts, or hinders; that which stops or obstructs; that which closes or fills a vent or hole in a vessel.
	2.	(Naut.) A short piece of rope having a knot at one or both ends, with a lanyard under the knot, - used to secure something.
	3.	(Bot.) A name to several trees of the genus Eugenia, found in Florida and the West Indies; as, the red stopper. See Eugenia. Ring stopper (Naut.) a short rope or chain passing through the anchor ring, to secure the anchor to the cathead. Stopper bolt (Naut.) a large ringbolt in a ship's deck, to which the deck stoppers are hooked.
v. t.	1.	To close or secure with a stopper. [imp. & p. p. Stoppered ; p. pr. & vb. n. Stoppering.]

Noun	1.	stopper - blockage consisting of an object designed to fill a hole tightly Synonyms: plug, stopple
	2.	stopper - an act so striking or impressive that the show must be delayed until the audience quiets down Synonyms: show-stopper, showstopper
	3.	stopper - a remark to which there is no polite conversational reply Synonyms: conversation stopper
	4.	stopper - (bridge) a playing card with a value sufficiently high to insure taking a trick in a particular suit; "if my partner has a spade stopper I can bid no trump"
Verb	1.	stopper - close or secure with or as if with a stopper; "She stoppered the wine bottle"; "The mothers stoppered their babies' mouths with pacifiers" Synonyms: stopple

KO, bar, bind, block, block up, blockade, bonnet, bung, cap, caulk, ceil, check valve, chink, choke, choke off, choke up, clincher, clog, clog up, close, cock, coif, congest, constipate, cork, cover, crown, crusher, dam, dam up, death stroke, deathblow, dome, end-all, ender, faucet, fill, fill up, final stroke, finisher, finishing stroke, foul, hat, hood, jam, kayo, kayo punch, knockout, knockout blow, last dab, lid, obstipate, obstruct, occlude, operculum, pack, peg, pin, plug, plug up, quietus, roof, roof in, sea cock, settler, sockdolager, spigot, spike, spile, spill, stanch, stay, stench, stop, stop up, stopgap, stopple, stuff, stuff up, tap, tip, top, valve