Any one of several species of marine fishes more or less
   resembling a trout in appearance or habits, but not belonging to the
   same family, especially the California rock trouts, the common
   squeteague, and the southern, or spotted, squeteague; -- called also
   salt-water trout, sea trout, shad trout, and gray trout. See
   Squeteague, and Rock trout under Rock.