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Webster 1913 Edition
Pygostyle
Py′go-style
,Noun.
[Gr.
πυγή
the rump + [GREEK] a pillar.] (Anat.)
The plate of bone which forms the posterior end of the vertebral column in most birds; the plowshare bone; the vomer. It is formed by the union of a number of the last caudal vertebræ, and supports the uropigium.