1.
[syn: sockeye, sockeye salmon, red salmon, blueback salmon, Oncorhynchus nerka]
The Collaborative International Dictionary of English v.0.48:
Blueback \Blue"back`\, n. (Zool.)
(a) A trout (Salmo oquassa) inhabiting some of the lakes of
Maine.
(b) A salmon (Oncorhynchus nerka) of the Columbia River and
northward.
(c) An American river herring (Clupea [ae]stivalis),
closely allied to the alewife.
[1913 Webster]
WordNet (r) 3.0 (2006):
Oncorhynchus nerka
n 1: small salmon with red flesh; found in rivers and
tributaries of the northern Pacific and valued as food;
adults die after spawning [syn: sockeye, sockeye
salmon, red salmon, blueback salmon, Oncorhynchus
nerka]