DCHP-1 Online
blueback 
1 n. a young hood seal.
See also: hood seal
- 1842 The young [hooded seals] . . . have whitish bellies and dark gray backs, which when wet have a bluish tinge, whence they are called "blue-backs".
- 1883 The young of this species [hood seal] have not the thick woolly coat of the harp seals, and during that season they are called "blue-backs."
2 n. a three-year-old coho.
See also: blueback salmon coho
- 1842 The young [hooded seals] . . . have whitish bellies and dark gray backs, which when wet have a bluish tinge, whence they are called "blue-backs".