What is (a) The basal thickened portion of the anterior wings of certain hemiptera. (b) The terminal horny plate on the beak of ducks, and other allied birds called?

nail — (Zoöl.) (a) The basal thickened portion of the anterior wings of certain hemiptera. (b) The terminal horny plate on the beak of ducks, and other allied birds. (Webster's 1913.)

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