[hag.fish] n (1611): any of a family (Myxinidae) of marine cyclostomes that are related to the lampreys and in general resemble eels but have a round mouth surrounded by barbels and that feed upon other fishes and invertebrates by boring into their bodies
HAGFISH
Meaning of HAGFISH in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012