Available Definitions:
1) n. - Any projection or division, especially one of a somewhat rounded form
2) n. - A rounded projection or division of a leaf.
3) n. - A membranous flap on the sides of the toes of certain birds, as the coot.
4) n. - A round projecting part of an organ, as of the liver, lungs, brain, etc. See Illust . of Brain.
5) n. - The projecting part of a cam wheel or of a non-circular gear wheel.