- the area under the tail of a bird, around the cloacal opening
- the feathers covering this
Origin of crissumModern Latin from Classical Latin crissare, for crisare, to move the haunches from Indo-European an unverified form (s)kreit- from base an unverified form (s)ker-, to turn from source Classical Latin curvus: see curve
The feathers or area under the tail of a bird surrounding the cloacal opening.
Origin of crissumNew Latin from Latin crīsāre, crissāre to move the buttocks during intercourse ; see sker-2 in Indo-European roots.