LOBE

noun a rounded projection or division of a leaf.

2. lobe ·noun the projecting part of a cam wheel or of a non-circular gear wheel.

3. lobe ·noun any projection or division, especially one of a somewhat rounded form.

4. lobe ·noun a membranous flap on the sides of the toes of certain birds, as the coot.

5. lobe ·noun a round projecting part of an organ, as of the liver, lungs, brain, ·etc. ·see ·illust. of brain.