To dance a ceilidh

plural of ceilidh

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

A belt or girdle.

A social event with traditional Irish or Scottish music and dancing.

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

A device that measures the altitude of the cloud base, especially above an airfield.

plural of ceilometer

simple past tense and past participle of ceil

(in combination) Having some specified type of ceiling