the lower extremity of the face, below the mouth.

the prominence of the lower jaw.

Informal . chin-up.

Gymnastics .

to bring one's chin up to (a horizontal bar, from which one is hanging by the hands), by bending the elbows.

to raise (oneself) to this position.

to raise or hold to the chin, as a violin.

Archaic . to talk to; chatter with.

Gymnastics . to chin oneself.

Slang . to talk; chatter

We sat up all night chinning about our college days.

keep one's chin up, to maintain a cheerful disposition in spite of difficulties, disappointments, etc. Also

chin up.

take it on the chin

Informal .

to suffer defeat; fail completely.

to endure suffering or punishment.

noun

button , jaw , jawbone , mandible , mentum , point , chat , chitchat , cleft , lantern jaw , rap , talk