DCHP-1 Online
Siwash duck B.C. 
1 a common duck, Clangula hyemalis, of the northern hemisphere.
See also: old squaw (duck)
- 1956 Old Squaw [is also called] Siwash, Siwash duck (For the Siwash Indians, B.C.). . . .
- 1956 Old Squaw [is also called] Siwash, Siwash duck (For the Siwash Indians, B.C.). . . .
2 a scoter, Melonitta sp. or Oidemia nigra.
- 1959 White-winged Scoter [is also called] Siwash, Siwash duck (Eaten by the Siwash Indians, so named for them. B.C.). . . .
- 1966 It is a rare occurrence for a Siwash duck, as the species [surf scoter] is commonly called, to be found on such a shoreline. . . .
- 1959 White-winged Scoter [is also called] Siwash, Siwash duck (Eaten by the Siwash Indians, so named for them. B.C.). . . .