Castile soap Hear it!

Castile soap definition

Castile soap

a fine, mild, hard soap prepared from olive oil and sodium hydroxide

Etymology: ME Castell sope, after Castile, where first made

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

Comments
Improve this definition.
Do you have more to add? Share your linguistic knowledge or observation.
/Register to save your comments.