Definition of "scaup"

scaup

/skɔːp/

noun
plural scaups or scaup
1. Any of three species of small diving duck in the genus Aythya.
  Quotations
  Or spot gaggles of Canada geese, ducks and scaups flying over schools of bluefish.
  2009 March 29, Deborah Baldwin, “A Waterside Village With a Big-City Backdrop”, in New York Times‎
2. (Scotland) Alternative form of scalp (“a bed or stratum of shellfish”)