blueback Meaning, Definition & Usage

Blue"back` noun
Definitions
  1. (Zoöl.) (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 æstivalis), closely allied to the alewife.

Webster 1913