least weasel


Definition of least weasel

: a small weasel (Mustela nivalis) of northern North America, Eurasia, and northern Africa that is brown above and white below in summer and in its northern range usually all white in winter, that ranges in length from 6 to 10 inches (15.2 to 25.4 centimeters) including a tail that is usually 1 to 2.5 inches (2.5 to 6.4 centimeters) long, and that lacks the black-tipped tail found in the related short-tailed weasel and long-tailed weasel

Note: The least weasel is the smallest known carnivore and preys especially on small rodents (such as mice and voles).

First Known Use of least weasel

1874, in the meaning defined above

Keep scrolling for more

Learn More about least weasel

Statistics for least weasel

Time Traveler for least weasel

The first known use of least weasel was in 1874

See more words from the same year

Comments on least weasel

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


not being in agreement or harmony

Get Word of the Day daily email!

Test Your Vocabulary

Confusing Words—A Quiz

  • alice with tweedle dee and tweedle dum
  • I invented a brand new toaster robot and ______ it "Sir Toasts-a-Lot."
Spell It

Can you spell these 10 commonly misspelled words?

Add Diction

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!