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n. pl. cris·sa (krĭs′ə)
The feathers or area under the tail of a bird surrounding the cloacal opening.

[New Latin, from Latin crīsāre, crissāre, to move the buttocks during intercourse; see sker- in Indo-European roots.]

cris′sal (-əl) adj.


n, pl -sa (-sə)
(Zoology) the area or feathers surrounding the cloaca of a bird
[C19: from New Latin, from Latin crissāre to move the haunches]
ˈcrissal adj


(ˈkrɪs əm)

n., pl. cris•sa (ˈkrɪs ə)
1. the region surrounding the cloacal opening beneath the tail of a bird.
2. the feathers of this region collectively.
[1870–75; < New Latin, derivative of Latin crissāre to move the haunches]
cris′sal, adj.
References in periodicals archive ?
Both with more extensive, bright rusty crissum, most like P.
Pratt (2002a: 9) found that it "mostly resembles the adult plumage except: black of forehead and lores more extensive with black breast band extending anteriorly through the throat to include the chin; middle of back, shoulder, flank, lower belly, crissum, outer webs of tertials, edges and broad tips of greater upper secondary coverts tawny, remainder black.
At 47 days, semiplumes were visible only around the crissum.