The Collaborative International Dictionary of English v.0.48:

Goggler \Gog"gler\, n. (Zool.)
   A carangoid oceanic fish (Trachurops crumenophthalmus),
   having very large and prominent eyes; -- called also
   goggle-eye, big-eyed scad, and cicharra.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Scad \Scad\, n. [Gael. & Ir. sgadan a herring.] (Zool.)
   (a) 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.
   (b) The goggler; -- called also big-eyed scad. See
       Goggler.
   (c) The friar skate. [Scot.]
   (d) The cigar fish, or round robin.
       [1913 Webster]

WordNet (r) 3.0 (2006):

big-eyed scad
    n 1: of Atlantic coastal waters; commonly used for bait [syn:
         bigeye scad, big-eyed scad, goggle-eye, Selar
         crumenophthalmus]