There is no word precisely equivalent to this in English. Any dish of butcher's meat, fowl, game, or fish, dressed for the first course, is called an entree.

Entresiet

There is no word equivalent to this in English. All dishes of vegetables, jellies, pastries, salad, prawns, lobsters, and, in general, everything that appears in the second course, except the roast, is called an entremet.