Collins English-English Dictionary

lip [lɪp]

1. 1. n [anatomy] either of the two fleshy folds surrounding the mouth, playing an important role in the production of speech sounds, retaining food in the mouth, etc

2. 2. n (as modifier)

   lip salve

3. 3. n the corresponding part in animals, esp mammals

4. 4. n any structure resembling a lip, such as the rim of a crater, the margin of a gastropod shell, etc

5. 5. n a nontechnical word for labium labellum

6. 6. n [slang] impudent talk or backchat

7. 7. n the embouchure and control in the lips needed to blow wind and brass instruments

8. 8. vt. [tr] to touch with the lip or lips

9. 9. vt. [tr] to form or be a lip or lips for

10. 10. vt. [tr] [rare] to murmur or whisper

11. 11. vi. [intr] to use the lips in playing a wind instrument

12. 12. vi. See also lip out

13. 13. vi. [Etymology] Old English lippa; related to Old High German leffur, Norwegian lepe, Latin labium