The highest altitude at which an aircraft may fly due to physical factors, such as low air density.

A fan fixture attached to a ceiling, sometimes with a built-in light.

plural of dropped ceiling

(architecture) A tray-shaped recess in a ceiling.

plural of tray ceiling

Especially in America, a social barrier to further promotion or progression, in employment and elsewhere, for a person of East Asian ethnicity.

A social barrier to consideration (by cisgender women) of transgender women as viable sexual partners. / Used other than figuratively or idiomatically: see cotton, ceiling.

plural of drop ceiling

An informal (and often unacknowledged) barrier to promotion or advancement, in employment and elsewhere, for middle-aged and elderly people.

plural of bamboo ceiling