Meaning

noun either of two fleshy folds of tissue that surround the mouth and play a role in speaking

noun (botany) either of the two parts of a bilabiate corolla or calyx

noun an impudent or insolent rejoinder

originBorrowed from Dutch and North German Lips, from a reduced form of the personal name Philips.

Etymology from Wiktionary, CC BY-SA 3.0