Definition of au gratin adjective from the Oxford Advanced Learner's Dictionary


au gratin

BrE BrE//ˌəʊ ˈɡrætæn//
; NAmE NAmE//ˌoʊ ˈɡrætæn//
[usually before noun] (from French)
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covered in breadcrumbs or cheese and made brown by heating in an oven, etc. Word OriginFrench, literally ‘by grating’, from the verb gratter ‘to grate’.
See the Oxford Advanced American Dictionary entry: au gratin