au gratin[ō grat′'n, -grät′-; Fr ō grȧ tan′]
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
having a lightly browned crust of bread crumbs and grated cheese
Origin: Fr, lit., with scrapings
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Covered with bread crumbs and sometimes butter and grated cheese, and then browned in an oven: potatoes au gratin.
Origin: French : au, with the + gratin, scraping from the pan.