n.1. Anatomy a. Either of two fleshy structures that surround the opening of the mouth in humans and other mammals.
b. In humans, the smooth brownish to reddish border of the lip.
2. A structure or part that encircles or bounds an orifice, as:
a. Anatomy A labium.
b. The margin of flesh around a wound.
c. Either of the margins of the aperture of a gastropod shell.
d. A rim, as of a vessel, bell, or crater.
3. Botany One of the two divisions of a bilabiate corolla or calyx, as in the snapdragon, or the modified median petal of an orchid flower.
4. The tip of a pouring spout, as on a pitcher.
5. Slang Insolent talk.
tr.v. lipped,
lip·ping,
lips 1. a. To touch the lips to.
b. To kiss.
2. To utter.
3. To lap or splash against.
4. Sports To hit a golf ball so that it touches the edge of (the hole) without dropping in.