1. Botany. See flower head (sense 1).
2. Biology. A small knob or head-shaped part, such as a protuberance of a bone or the tip of an insect's antenna.

[Latin, diminutive of caput, capit-, head.]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.