Definition of sheatfish
: a large elongated catfish (Silurus glanis) of central and eastern European rivers that may attain a length of 10 feet and a weight of 400 pounds and that lacks an adipose fin and has the long anal nearly confluent with the caudal; broadly : any of several large catfishes
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Origin and Etymology of sheatfish
alteration (perhaps influenced by German schaid sheatfish, from Old High German sceida sheatfish, sheath) of sheathfish
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