n. 1.a humorous anecdote or remark intended to provoke laughter 2.restraint put into a person's mouth to prevent speaking or shouting gag v. 1.prevent from speaking out 2.be too tight 3.tie a gag around someone's mouth in order to silence them 4.make jokes or quips 5.struggle for breath 6.cause to retch or choke 7.make an unsuccessful effort to vomit