shad > define
noun
- Bony flesh of herring-like fish usually caught during their migration to fresh water for spawning; especially of Atlantic coast.
- Herring-like food fishes that migrate from the sea to fresh water to spawn. .
by WordNet 3.0 © 2006 by Princeton University
(n.sing.&pl.) Any one of several species of food fishes of the Herring family. The American species (Clupea sapidissima), which is abundant on the Atlantic coast and ascends the larger rivers in spring to spawn, is an important market fish. The European allice shad or alose (C. alosa), and the twaite shad. (C. finta), are less important species.
by Webster's Revised Unabridged Dictionary