[lip] 
noun, adjective, verb, lipped, lip⋅ping.| 1. | either of the two fleshy parts or folds forming the margins of the mouth and functioning in speech. |
| 2. | Usually, lips. these parts as organs of speech: I heard it from his own lips. |
| 3. | a projecting edge on a container or other hollow object: the lip of a pitcher. |
| 4. | a liplike part or structure, esp. of anatomy. |
| 5. | any edge or rim. |
| 6. | the edge of an opening or cavity, as of a canyon or a wound: the lip of the crater. |
| 7. | Slang. impudent talk; back talk: Don't give me any of your lip. |
| 8. | Botany. either of the two parts into which the corolla or calyx of certain plants, esp. of the mint family, is divided. |
| 9. | Zoology.
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| 10. | Music. the position and arrangement of lips and tongue in playing a wind instrument; embouchure. |
| 11. | the cutting edge of a tool. |
| 12. | the blade, at the end of an auger, which cuts the chip after it has been circumscribed by the spur. |
| 13. | (in a twist drill) the cutting edge at the bottom of each flute. |
| 14. | of or pertaining to the lips or a lip: lip ointment. |
| 15. | characterized by or made with the lips: to read lip movements. |
| 16. | superficial or insincere: to offer lip praise. |
| 17. | to touch with the lips. |
| 18. | Golf. to hit the ball over the rim of (the hole). |
| 19. | to utter, esp. softly. |
| 20. | to kiss. |
| 21. | to use the lips in playing a musical wind instrument. |
| 22. | lip off, Slang. to talk impudently or belligerently. |
| 23. | bite one's lip or tongue, to repress one's anger or other emotions: He wanted to return the insult, but bit his lip. |
| 24. | button one's lip, Slang. to keep silent, esp., to refrain from revealing information: They told him to button his lip if he didn't want trouble. Also, button up. |
| 25. | hang on the lips of, to listen to very attentively: The members of the club hung on the lips of the visiting lecturer. |
| 26. | keep a stiff upper lip,
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| 27. | smack one's lips, to indicate one's keen enjoyment or pleasurable anticipation of: We smacked our lips over the delicious meal. |
| var. of lipo- 1 before a vowel: lipectomy, libase, lipemia. |
| a combining form meaning “fat,” used in the formation of compound words: lipolysis. |
| lip (lĭp) n.
[Middle English, from Old English lippa; see leb- in Indo-European roots.] lip'less adj. |
lip
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lip (lĭp)
n.
Either of two fleshy folds that surround the opening of the mouth.
A liplike structure bounding or encircling a bodily cavity or groove.
lip- pref.
Variant of lipo-.
lipo- or lip-
pref.
Fat; fatty; fatty tissue: lipolysis.
Lip
besides its literal sense (Isa. 37:29, etc.), is used in the original (saphah) metaphorically for an edge or border, as of a cup (1 Kings 7:26), a garment (Ex. 28:32), a curtain (26:4), the sea (Gen. 22:17), the Jordan (2 Kings 2:13). To "open the lips" is to begin to speak (Job 11:5); to "refrain the lips" is to keep silence (Ps. 40:9; 1 Pet. 3:10). The "fruit of the lips" (Heb. 13:15) is praise, and the "calves of the lips" thank-offerings (Hos. 14:2). To "shoot out the lip" is to manifest scorn and defiance (Ps. 22:7). Many similar forms of expression are found in Scripture.
lip
In addition to the idioms beginning with lip, also see button up (one's lip); keep a stiff upper lip; lick one's chops (lips); pass one's lips.