Scaup

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Scaup \Scaup\ (sk[add]p), n. [See {Scalp} a bed of oysters or
     mussels.]
     1. A bed or stratum of shellfish; scalp. [Scot.]
        [1913 Webster]
  
     2. (Zool.) A scaup duck. See below.


        [1913 Webster]
  
     {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.
        [1913 Webster]

From WordNet (r) 2.0 [wn]:

  scaup
       n : diving ducks of North America having a bluish-gray bill
           [syn: {scaup duck}, {bluebill}, {broadbill}]