sheat·​fish | \ ˈshētˌfish \

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

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for sheatfish

alteration (perhaps influenced by German schaid sheatfish, from Old High German sceida sheatfish, sheath) of sheathfish

Keep scrolling for more

Learn More about sheatfish

Statistics for sheatfish

Cite this Entry

“Sheatfish.” Dictionary, Merriam-Webster, Accessed 27 Nov. 2020.

Comments on sheatfish

What made you want to look up sheatfish? Please tell us where you read or heard it (including the quote, if possible).


Test Your Vocabulary

A Thanksgiving Word Quiz

  • a traditional thanksgiving dinner
  • November comes from a word for which of the following numbers?
Spell It

Can you spell these 10 commonly misspelled words?

Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!