Lip (noun)

1. Either of the two fleshy protuberances surrounding the mouth.
2. The edge or margin of something, especially when raised or curled.
3. The front edge of a wheel or drum.

Origin:

Middle english, from old english lippa, from late latin labium.

Examples:

1. She has red lips.
2. The ship sailed close to the lip of the cliff.
3. He tightened the lip of the drum.