Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. See scaup.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. the scaup (of genus Aythya)
  • n. Spermophaga, estrildid finches found in tropical Africa.

from the GNU version of the Collaborative International Dictionary of English

  • n. A duck of the genus Fuligula. Two American species (Fuligula marila and Fuligula affinis) are common. See scaup duck.

from The Century Dictionary and Cyclopedia

  • n. A scaup duck; the blackhead (which see).

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. diving ducks of North America having a bluish-grey bill

Etymologies

blue +‎ bill (Wiktionary)

Examples

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  • as opposed to blue-toothed????

    March 17, 2012