Definition of scaup
plural scaup or scaups
: either of two diving ducks (Aythya affinis or A. marila) with the male having a glossy purplish or greenish head and a black breast and tail
Origin of scaup
short for scaup duck; scaup probably alteration of scalp bed of shellfish
First Known Use: 1797
Learn More about scaup
Britannica.com: Encyclopedia article about "scaup"
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