1. (

• lip

) either of two fleshy folds of tissue that surround the mouth and play a role in speaking ;

2. (

• lip

) (botany) either of the two parts of a bilabiate corolla or calyx ;

3. (

• sass ,
• sassing ,
• backtalk ,
• back_talk ,
• lip ,
• mouth

) an impudent or insolent rejoinder; "don't give me any of your sass" ;

4. (

• brim ,
• rim ,
• lip

) the top edge of a vessel or other container ;

5. (

• lip

) either the outer margin or the inner margin of the aperture of a gastropod's shell ;