D defs.my
Entry 1 sense Webster, 1913

Au gratin

· Au· gra·tin · IPA /oʊ ˈɡrɑtən/
01 With a crust made by browning in the oven, especially by sprinkling with bread crumbs or grated cheese and browning in a broiler; as, spagh…
  1. 1.
    With a crust made by browning in the oven, especially by sprinkling with bread crumbs or grated cheese and browning in a broiler; as, spaghetti may be served au gratin.(Cookery)