Word Study
pygostyle
CIDE DICTIONARY
pygostyle, n. [Gr. pygh` the rump + a pillar.].
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. [1913 Webster]
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