<p><strong>Noun</strong></p><ul><li>(especially collectively) lump fish, (especially referring to two or more kinds or species) lump fishes.</li><li>Any of several thick-bodied, sluggish fishes of the family Cyclopteridae, found in northern seas, having the pelvic fins modified and united into a sucking disk, especially <em>Cyclopterus lumpus</em>, of the North Atlantic.</li></ul>