Our online medical glossary of medical terms and definitions includes definitions for terms related to treatment, and general medicine
BLUEBACK
A trout (Salmo oquassa) inhabiting some of the lakes of Maine.
A salmon (Oncorhynchus nerka) of the Columbia River and northward.
An American riverherring (Clupea aestivalis), closely allied to the alewife.
Source: Websters Vocabulary