raft duck

from The Collaborative International Dictionary of English v.0.48
Scaup \Scaup\ (sk[add]p), n. [See {Scalp} a bed of oysters or
   mussels.]
   1. A bed or stratum of shellfish; scalp. [Scot.]
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   2. (Zool.) A scaup duck. See below.
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   {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.
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from The Collaborative International Dictionary of English v.0.48
Raft \Raft\, n. [Originally, a rafter, spar, and fr. Icel. raptr
   a rafter; akin to Dan. raft, Prov. G. raff a rafter, spar;
   cf. OHG. r[=a]fo, r[=a]vo, a beam, rafter, Icel. r[=a]f roof.
   Cf. {Rafter}, n.]
   1. A collection of logs, boards, pieces of timber, or the
      like, fastened together, either for their own collective
      conveyance on the water, or to serve as a support in
      conveying other things; a float.
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   2. A collection of logs, fallen trees, etc. (such as is
      formed in some Western rivers of the United States), which
      obstructs navigation. [U.S.]
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   3. [Perhaps akin to raff a heap.] A large collection of
      people or things taken indiscriminately. [Slang, U. S.] "A
      whole raft of folks." --W. D. Howells.
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   {Raft bridge}.
      (a) A bridge whose points of support are rafts.
      (b) A bridge that consists of floating timbers fastened
          together.

   {Raft duck}. [The name alludes to its swimming in dense
      flocks.] (Zool.)
      (a) The bluebill, or greater scaup duck; -- called also
          {flock duck}. See {Scaup}.
      (b) The redhead.

   {Raft port} (Naut.), a large, square port in a vessel's side
      for loading or unloading timber or other bulky articles; a
      timber or lumber port.
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from The Collaborative International Dictionary of English v.0.48
Broadbill \Broad"bill`\, n.
   1. (Zool.) A wild duck ({Aythya marila}, or {Fuligula
      marila}), which appears in large numbers on the eastern
      coast of the United States, in autumn; -- called also
      {bluebill}, {blackhead}, {raft duck}, and {scaup duck}.
      See {Scaup duck}.
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   2. (Zool.) The shoveler. See {Shoveler}.
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