sunfish (Noun) — The lean flesh of any of numerous American perch-like fishes of the family Centrarchidae.
sunfish (Noun) — Among the largest bony fish; pelagic fish having an oval compressed body with high dorsal and anal fins and caudal fin reduced to a rudder-like lobe; worldwide in warm waters.
sunfish (Noun) — Small carnivorous freshwater percoid fishes of North America usually having a laterally compressed body and metallic lustre: crappies; black bass; bluegills; pumpkinseed.