Synonyms for lip

noun

1. A fleshy portion of the mouth

   speech organ, fold of flesh, edge of the mouth, liplike part, labium, labrum; see also mouth1.

2. An edge

   spout, margin, brim, flange, portal, nozzle, overlap, projection, flare; see also edge 1, rim.

bite one's lips

hang on the lips of

keep a stiff upper lip*

smack one's lips