ceiling

/ˈsiːlɪŋ/noun

The surface that closes off the top of a room, above your head.

Example sentence

“A fan hung from the ceiling, slowly turning in the heat.”

Figurative uses matter here: a price ceiling is an upper limit, and the glass ceiling is an invisible barrier to promotion.

Related words

floorThe flat bottom surface inside a building or room, on which people walk.carpetA thick woven material that covers an entire floor.windowAn opening in a building or vehicle, usually fitted with glass panes, that lets in light and air.curtainA hanging piece of fabric used to cover a window, bed, or other opening.gardenA piece of ground outdoors where flowers, vegetables, or other plants are grown.lampA device that produces light, and sometimes heat or other forms of radiation.