/al"i gay'teuhr fish'/ , n. , pl. ( esp. collectively ) alligatorfish , ( esp. referring to two or more kinds or species ) alligatorfishes .
1. a slender marine fish, Aspidophoroides monopterygius, of Atlantic seas, having overlapping plates covering the body.
2. any of several related fishes of the family Agonidae.
[ 1765-75, Amer.; ALLIGATOR + FISH ]