shad

Any one of several species of food fishes that make up the genus Alosa in the family Clupeidae, to which the herrings also belong; river herring.

Each river had its village and its iron bridge that the train crossed with a blast of its whistle, and the girls bathing in the icy water leaped like shad as it passed, unsettling travelers with their fleeting breasts.

Any bluefish of the species Pomatomus saltatrix.

A surname.