noun ri·deau \rə̇ˈdō\

Definition of rideau



  1. :  a small ridge or mound of earth :  ground slightly elevated

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.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of rideau

French, from Middle French, literally, curtain; perhaps from Middle English ridel, riddel curtain — more at riddel

Seen and Heard

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


a brief usually trivial fact

Get Word of the Day daily email!