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Webster 1913 Edition
Scaup
1.
A bed or stratum of shellfish; scalp.
[Scot.]
2.
(Zool.)
A scaup duck. See below.
Scaup duck
(Zool.)
, any one of several species of northern ducks of the genus
Aythya
, or Fuligula
. The adult males are, in large part, black. The three North American species are: the greater scaup duck (Aythya marila
, var. nearctica
), called also broadbill
, bluebill
, blackhead
, flock duck
, flocking fowl
, and raft duck
; the lesser scaup duck (Aythya affinis
), called also little bluebill
, river broadbill
, and shuffler
; the tufted, or ring-necked, scaup duck (Aythya collaris
), called also black jack
, ringneck
, ringbill
, ringbill shuffler
, etc. See Illust. of Ring-necked duck
, under Ring-necked
. The common European scaup, or mussel, duck (Aythya marila
), closely resembles the American variety.Webster 1828 Edition
Scaup
SCAUP
,Noun.