mackerel shad

from WordNet (r) 3.0 (2006)

mackerel shad
    n 1: small silvery fish; Nova Scotia to Brazil [syn: {mackerel
         scad}, {mackerel shad}, {Decapterus macarellus}]

from The Collaborative International Dictionary of English v.0.48

mackerel scad \mackerel scad\, mackerel shad \mackerel shad\n.
   (Zool.)
   A small silvery fish ({Decapterus macarellus}) found from
   Nova Scotia to Brazil.
   [WordNet 1.5]