Easton's Bible Dictionary
Besides its literal sense (Isaiah 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 (Exodus 28:32), a curtain (26:4), the sea (Genesis 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 (Psalm 40:9; 1 Peter 3:10). The "fruit of the lips" (Hebrews 13:15) is praise, and the "calves of the lips" thank-offerings (Hosea 14:2). To "shoot out the lip" is to manifest scorn and defiance (Psalm 22:7). Many similar forms of expression are found in Scripture.
Noah Webster's New International Dictionary of the English Language
1. (n.) One of the two fleshy folds which surround the orifice of the mouth in man and many other animals. In man the lips are organs of speech essential to certain articulations. Hence, by a figure they denote the mouth, or all the organs of speech, and sometimes speech itself.
2. (n.) An edge of an opening; a thin projecting part of anything; a kind of short open spout; as, the lip of a vessel.
3. (n.) The sharp cutting edge on the end of an auger.
4. (n.) One of the two opposite divisions of a labiate corolla.
5. (n.) The odd and peculiar petal in the Orchis family. See Orchidaceous.
6. (n.) One of the edges of the aperture of a univalve shell.
7. (v. t.) To touch with the lips; to put the lips to; hence, to kiss.
8. (v. t.) To utter; to speak.
9. (v. t.) To clip; to trim.