What is the meaning of Gratin?

The top crust of a dish, consisting of breadcrumbs or grated cheese heated under a grill; the dish itself.

inflection of gratar:

  1. third-person plural present subjunctive
  2. third-person plural imperative

third-person plural present subjunctive

third-person plural imperative

gratin

upper crust, elite

Source: wiktionary.org