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sheathbill definition

sheath·bill (s̸hēt̸h′bil′)

noun

any of a family (Chionidae) of white-plumed antarctic shorebirds distinguished by a horny, saddlelike sheath at the base of the upper bill

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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