a piece of cloth put in or over a person's mouth to prevent them from speaking

they tied him up and put a gag in his mouth

a device for keeping the patient's mouth open during a dental or surgical operation

put a gag on (someone)

she was bound and gagged by robbers

choke or retch

he gagged on the wine

be very eager to have or do (something)

I'm absolutely gagging for a pint

we'll be sitting in front of the TV at five to seven next Saturday evening, gagging for the next instalment

a joke or an amusing story, especially one forming part of a comedian's act or in a film

films that goad audiences into laughing at the most tasteless of gags

tell jokes

they gagged about their sexual problems