'Crissum' definitions:
Definition of '
Crissum
'
From:
GCIDE
Crissum \Cris"sum\ (kr?s"s?m),, n.; pl.
Crissa
(-s?). [NL.; cf. L. crisso to move the haunches.] (Zool.) That part of a bird, or the feathers, surrounding the cloacal opening; the under tail coverts. [1913 Webster]
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