scad(n = noun.animal) - any of a number of fishes of the family Carangidae;
is a kind of carangid, carangid fish
is a member of carangidae, family carangidae
has particulars: horse mackerel, jack mackerel, saurel, spanish mackerel, trachurus symmetricus, horse mackerel, saurel, trachurus trachurus, big-eyed scad, bigeye scad, goggle-eye, selar crumenophthalmus, decapterus macarellus, mackerel scad, mackerel shad, cigarfish, decapterus punctatus, quiaquia, round scad

   A small carangoid fish (Trachurus saurus) abundant on the European coast, and less common on the American. The name is applied also to several allied species. [1913 Webster]

scad, n. any fish of the family Carangidae native to tropical and subtropical seas, usu. having an elongated body and very large spiky scales.

Etymology:
17th c.: orig. unkn.

big-eyed scad, bigeye scad, mackerel scad, round scad