lip meaning and definition

LIP noun

Definition of lip (noun)

1. either of two fleshy folds of tissue that surround the mouth and play a role in speaking
2. (botany) either of the two parts of a bilabiate corolla or calyx
3. an impudent or insolent rejoinder
   • "don't give me any of your sass"
   • synonyms: back talk, backtalk, mouth, sass, sassing
4. the top edge of a vessel or other container
   • synonyms: brim, rim
5. either the outer margin or the inner margin of the aperture of a gastropod's shell