Lobe (lōb), n. [F. lobe,
Gr. lobo`s.] Any projection or division, especially
one of a somewhat rounded form; as: (a)
(Bot.) A rounded projection or division of a leaf.
Gray. (b)(Zoöl.) A membranous
flap on the sides of the toes of certain birds, as the coot.
(c) (Anat.) A round projecting part of an
organ, as of the liver, lungs, brain, etc. See Illust. of
Brain. (b) (Mach.) The
projecting part of a cam wheel or of a non-circular gear
wheel.
Lobe of the ear, the soft, fleshy prominence
in which the human ear terminates below. See. Illust. of
Ear.