those people at the top of a social hierarchy / the aristocracy

(US, informal) A house, property, car, or other object that needs to be fixed up or repaired, often purchased as an investment.

(historical) A former country (1958-1984) in West Africa; now Burkina Faso.

The uppermost side of anything

plural of upper side

(informal) someone or something which gives up

plural of upper crust

Used other than figuratively or idiomatically: see upper, crust. The topmost layer of a bread, pastry dish, or other item with a hardened coating.

Alternative form of upper-crust

destitute; poor.