\(ˌ)ōˈblœ̅, -ˈblə̄, -ˈblü\

Definition of au bleu 

: cooked by boiling in acidulated water immediately after being killed and cleaned but without being washed or scaled used especially of trout

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!

First Known Use of au bleu

1776, in the meaning defined above

History and Etymology for au bleu

French, literally, to the blue; from the fact that the skin of fish cooked in this manner turns blue

Keep scrolling for more

Learn More about au bleu

Statistics for au bleu

Look-up Popularity

Time Traveler for au bleu

The first known use of au bleu was in 1776

See more words from the same year

Comments on au bleu

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


having a pattern of small flowers

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
Spell It

Can you spell these 10 commonly misspelled words?

Syn City

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!