Capitulum
Capitulum (kȧ*pit"u*lum) , noun
[Latin, a small head.]
1.
A thick head of flowers on a very short axis, as a clover top, or a dandelion; a composite flower. A capitulum may be either globular or flat. — Gray
[See Illust. of Artiodactyla.]
2.
(Anatomy) A knoblike protuberance of any part, esp. at the end of a bone or cartilage. [See Illust. of Artiodactyla.]