From WordNet (r) 3.0 (2006):
gag
n 1: a humorous anecdote or remark intended to provoke laughter;
"he told a very funny joke"; "he knows a million gags";
"thanks for the laugh"; "he laughed unpleasantly at his own
jest"; "even a schoolboy's jape is supposed to have some
ascertainable point" [syn: joke, gag, laugh, jest,
jape]
2: restraint put into a person's mouth to prevent speaking or
shouting [syn: gag, muzzle]
v 1: prevent from speaking out; "The press was gagged" [syn:
gag, muzzle]
2: be too tight; rub or press; "This neckband is choking the
cat" [syn: choke, gag, fret]
3: tie a gag around someone's mouth in order to silence them;
"The burglars gagged the home owner and tied him to a chair"
[syn: gag, muzzle]
4: make jokes or quips; "The students were gagging during
dinner" [syn: gag, quip]
5: struggle for breath; have insufficient oxygen intake; "he
swallowed a fishbone and gagged" [syn: gag, choke,
strangle, suffocate]
6: cause to retch or choke [syn: gag, choke]
7: make an unsuccessful effort to vomit; strain to vomit [syn:
gag, heave, retch]