Lip

n. [A-S. & O. Fries. lippa, O. D., L. & H. Ger. lippe, D. lip, Dan. lippe, läbe, Sw. läpp, allied to Lat. labium, labrum, Per. lab, leb, Lith. lippa.]

1. One of the two fleshy or muscular parts composing the exterior of the mouth in man and many other animals. In man, the lips form the covering of the teeth, and are organs of speech essential to certain articulations. Hence the lips, by a figure, denote the mouth, or all the organs of speech, and sometimes speech itself.
2. The edge of any thing; as, the lip of a vessel; the lips of a wound.
3. (Bot.) (a.) One of the two opposite divisions of a labiate corolla. The upper is called the helmet, and the lower the beard. (b.) The odd and peculiar petal in the Orchis family. Martyn.
4. (Conch.) The outer edge of the aperture of a univalve shell.

To make a lip, to drop the under lip in sullenness or contempt. Shak.