1. A cupboard or set of shelves, either movable or fixed at one side of a room, for the display of plate, china, etc, a sideboard. Not when a gilt buffet's reflected pride turns you from sound philosophy aside. (Pope)
2. A counter for refreshments; a restaurant at a railroad station, or place of public gathering.
Origin: f. Buffet, LL. Bufetum; of uncertain origin; perh. Fr. The same source as E. Buffet a blow, the root meaning to puff, hence (cf. Puffed up) the idea of ostentation or display.