n., pl., sheatfish, or -fish·es.
A very large freshwater catfish (Silurus glanis) of central and eastern Europe and western Asia.
[Alteration of obsolete sheathfish : SHEATH (translation of German Scheide, sheath, sheathfish) + FISH.]
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
