pl. (see fish) -·fish·, -·fish·es
any silurid catfish, esp. a very large species (Silurus glanis)
Origin of sheatfishearlier sheath-fish ; from sheath + fish
nounpl. sheatfish or sheat·fish·es
A large freshwater catfish (Silurus glanis) of Eurasia, having a wide mouth and long barbels on the upper jaw. Also called wels catfish.
Origin of sheatfishAlteration of obsolete sheathfish : sheath (translation of German Scheide, sheath, sheathfish) + fish.
(plural sheatfishes or sheatfish)