Oncorhynchus nerka

from 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}]

from 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]

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