shad
Pronunciation: /ʃad/
noun ( plural or shads)
- a herring-like fish that spends much of its life in the sea, typically entering rivers to spawn. It is an important food fish in many regions.
- Genera Alosa and Caspialosa, family Clupeidae: several species. See allis shad and twaite shad

Origin:
Old English sceadd, of unknown origin