Pronunciation: (bat'fish"),[key] —n., —pl.(esp. collectively)-fish,(esp. referring to two or more kinds or species)-fish•es. 1. any of the flat-bodied, marine fishes of the family Ogcocephalidae, as Ogcocephalus vespertilio, common in the southern Atlantic coastal waters of the U.S.
2. a stingray, Aetobatis californicus, found off the coast of California.