The Collaborative International Dictionary
Trachurus saurus
Scad \Scad\, n. [Gael. & Ir. sgadan a herring.] (Zo["o]l.)
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.
The goggler; -- called also big-eyed scad. See Goggler.
The friar skate. [Scot.]
The cigar fish, or round robin.