greater scaup

variants: or

greater scaup duck

Definition of greater scaup

  1. :  a North American diving duck (Aythya marila nearctica) resembling the lesser scaup duck but being slightly larger and having a greenish iridescence on the head of the adult male, breeding in arctic northwestern America, and wintering on both coasts of North America

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Seen and Heard

What made you want to look up greater scaup? Please tell us where you read or heard it (including the quote, if possible).


to cast off or become cast off

Get Word of the Day daily email!