lip definition
The definition of a lip is either the top or bottom edges of the mouth, something that resembles these, or an outer or upper edge or rim. An example of a lip is what's used when kissing. An example of a lip is the edge of a glass. Lip is defined as to touch the lips to something. An example of lip is putting a musical instrument to your mouth in order to play. either of the two fleshy folds forming the edges of the mouth. anything like a lip, as in structure or in being an edge, rim, or margin; specif., the edge of a wound.