(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
The Collaborative International Dictionary of English (GCIDE) v.0.53Collaborative International Dictionary (GCIDE)
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 ]