hardhead

A fish of the herring species; the menhaden; so called in the State of Maine.

Hardhead
·noun The gray whale. II. Hardhead ·noun A California salmon; the steelhead. III. Hardhead ·noun C...

Webster's Dictionary of the English Language
hardhead
n. the English sportsman's name for theruddy duck (Erismatura rubida). Applied by sportsmen inAustr...

Dictionary of Australasian Words Phrases and Usages by Edward E. Morris