au gratin[ō grat′'n, -grät′-; Fr ō grȧ tan′]
A dish of oyster au gratin.
having a lightly browned crust of bread crumbs and grated cheese
Origin of au gratinFrench literally , with scrapings
Covered with bread crumbs and sometimes butter and grated cheese, and then browned in an oven: potatoes au gratin.
Origin of au gratinFrench : au, with the + gratin, scraping from the pan.