gag

prevent from speaking out

“The press was gagged”

make an unsuccessful effort to vomit; strain to vomit

tie a gag around someone's mouth in order to silence them

“The burglars gagged the home owner and tied him to a chair”

make jokes or quips

“The students were gagging during dinner”

struggle for breath; have insufficient oxygen intake

“he swallowed a fishbone and gagged”

restraint put into a person's mouth to prevent speaking or shouting

a humorous anecdote or remark intended to provoke laughter

“he knows a million gags”

be too tight; rub or press

cause to retch or choke