Definitions

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

  • n. Either of two diving ducks (Aythya marila or A. affinis) having predominantly black and white plumage in the male. Also called bluebill.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any of three species of small diving duck in the genus Aythya.
  • n. Alternative form of scalp; a bed or stratum of shellfish.

from the GNU version of the Collaborative International Dictionary of English

  • n. A bed or stratum of shellfish; scalp.
  • n. A scaup duck. See below.

from The Century Dictionary and Cyclopedia

  • n. A Scotch form of scalp.
  • n. A duck, Fuligula or Fulix marila and related species.

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

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

Etymologies

Perhaps from Scots scalp, scaup, bed of mussels (from its feeding on shellfish).
(American Heritage® Dictionary of the English Language, Fourth Edition)
See scalp ("a bed of oysters or mussels"). (Wiktionary)

Examples

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  • What is the scaup? (ducks primigeniall advantage?)

    March 17, 2012