(n) primitive long-bodied carnivorous freshwater fish with a very long dorsal fin; found in sluggish waters of North America, Syn. dogfish, Amia calva, grindle
n. (Zool.) A voracious ganoid fish (Amia calva) found in the fresh waters of the United States; the mudfish; -- called also Johnny Grindle, and dogfish. [ 1913 Webster ]