a cooked dish that is covered with a layer of cheese or breadcrumbs 脆皮烙菜（表面为干酪或面包屑） a gratin of tomatoes and basil with a crunchy crust 脆皮的西红柿和罗勒焗烤 gratin potatoes 焗土豆
Oxford Collocations DictionaryGratin is used before these nouns:see also au gratin- dish
Word OriginFrench, from gratter, earlier grater ‘to grate’.