Blueback
Blueback ({not transcribed}) , noun
(a)
(Zoology) A trout (Salmo oquassa) inhabiting some of the lakes of Maine.
(b)
(Zoology) A salmon (Oncorhynchus nerka) of the Columbia River and northward.
(c)
(Zoology) An American river herring (Clupea astivalis), closely allied to the alewife.