WordWeb Online

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

1. Touch with the lips

Derived forms: lips, lipped, lipping

Type of: articulator, border, comeback, counter, edge, external body part, margin, perimeter, plant part, plant structure, rejoinder, replication, retort, return, riposte

Part of: mouth, vessel

Encyclopedia: Lip, A Feminist Arts Journal