from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The feathers or area under the tail of a bird surrounding the cloacal opening.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The area of feathers on a bird that surround its cloaca.
from the GNU version of the Collaborative International Dictionary of English
- n. That part of a bird, or the feathers, surrounding the cloacal opening; the under tail coverts.
from The Century Dictionary and Cyclopedia
- n. In ornithology, the region between the anus and the tail of a bird; especially, the feathers of this region, the vent-feathers or under tail-coverts, collectively. See cut under bird.
New Latin, from Latin crīsāre, crissāre, to move the buttocks during intercourse.(American Heritage® Dictionary of the English Language, Fourth Edition)