(dated) The evening meal for servants, separate from the family's meal. / An informal or semiformal meal served for guests, not necessarily one served in the kitchen.

plural of box supper

A social gathering, mainly associated with Ozark culture, where pies are auctioned to raise money for a local cause.

plural of pie supper

A box social, especially in Ozark culture.

(Canada) An autumn fundraising dinner held by a community or church; fowl supper.

plural of supper club

(US) A dining establishment that also functions as a social club.

(Northern Ireland) A meal of sausages, baked beans, and chips or mashed potatoes.

plural of cowboy supper