Webster’s Revised Unabridged Dictionary · 1913
Capitulum
Ca·pit′u·lum (kȧ·pĭt′ū·lŭm), n.; pl. Capitula. [L., 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.
2. (Anat.) A knoblike protuberance of any part, esp. at the end of a bone or cartilage. [See Illust. of Artiodactyla.]