Yes, lips is a Scrabble word!

Noun

1. Either of two fleshy folds of tissue that surround the mouth and play a role in speaking

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

3. An impudent or insolent rejoinder

4. The top edge of a vessel or other container

5. Either the outer margin or the inner margin of the aperture of a gastropod's shell