any of a family (Molidae, order Tetraodontiformes) of marine bony fishes with an abruptly truncated body; esp., a large, sluggish fish (Mola mola) of tropical and temperate seas
See ocean sunfish in American Heritage Dictionary 4
noun
A marine fish (Mola mola) with a large globular body, found in warm and temperate seas. Also called mola2.