"hagfishes" in the noun sense
1. hagfish, hag, slime eels
eellike cyclostome having a tongue with horny teeth in a round mouth surrounded by eight tentacles feeds on dead or trapped fishes by boring into their bodies
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License