sheatfish

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A very large freshwater catfish (Silurus glanis) of central and eastern Europe and western Asia.

Century Dictionary and Cyclopedia

1. n. A fish of the family Siluridæ, especially Silurus glanis, the great catfish of central and eastern Europe, the largest fresh-water fish of Europe except the sturgeons, attaining a weight of 300 or 400 pounds. The flesh is edible, the fat is used in dressing leather, and the sound yields a kind of gelatin. It is of elongate form with a small dorsal, no adipose fin, a long anal, and a distinct caudal with a roundish margin; there are six barbels. It takes the place in Europe of the common catfish of North America, and belongs to the same family, but to a different subfamily. (See cut under Siluridæ.) With a qualifying term, sheat-fish extends to some related families. See phrases following.

Wiktionary

1. n. Any of several large, freshwater catfish, of the genus Silurus, found in the Danube and other Eastern European rivers.

GNU Webster's 1913

1. n. (Zoöl.) A European siluroid fish (Silurus glanis) allied to the cat-fishes. It is the largest fresh-water fish of Europe, sometimes becoming six feet or more in length. See siluroid.

WordNet 3.0

1. n. large elongated catfish of central and eastern Europe