noun Any one of several species of food fishes that make up the family Alosidae, especially those of the genus Alosa; formerly classified as kinds of herring.
A: Are those boats after menhaden? B: No, shad.
noun The American shad, as distinguished from other alosids such as menhaden.
A: Are those boats after menhaden? B: No, shad.
noun Any bluefish of the species Pomatomus saltatrix.