Definition of Lip

Noun: lip lip

Either of two fleshy folds of tissue that surround the mouth and play a role in speaking
(botany) either of the two parts of a bilabiate corolla or calyx
An impudent or insolent rejoinder
"don't give me any of your lip";
- sass [N. Amer], sassing [N. Amer], backtalk [N. Amer], back talk [N. Amer], mouth, backchat [Brit]
The top edge of a vessel or other container
- brim, rim
Either the outer margin or the inner margin of the aperture of a gastropod's shell

Verb: lip (lipped,lipping) lip