/hag"fish'/ , n. , pl. ( esp. collectively ) hagfish , ( esp. referring to two or more kinds or species ) hagfishes .
any eellike, marine cyclostome of the order Myxiniformes, having undeveloped eyes, a barbel-rimmed, circular mouth, and horny teeth for boring into the flesh of fishes to feed on their interior parts. See illus. in next column.
[ 1605-15; HAG 1 + FISH ]