A dish of oyster au gratin.
au gratin definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
having a lightly browned crust of bread crumbs and grated cheese
Origin: French literally , with scrapings
au gratin definition by American Heritage Dictionary
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.