Topic: AIR

Date: 1500-1600
Origin: ceil 'to provide with a ceiling' (16-20 centuries), probably from Latin caelare 'to cut into a surface'


cei‧ling S3 W3 [countable]
1TBB the inner surface of the top part of a room [↪ roof]:
rooms with high ceilings
a light hanging from the ceiling
2 the largest number or amount of something that is officially allowed
ceiling of
a public spending ceiling of £240 bn
impose/set/put a ceiling (on something)
The government imposed a ceiling on imports of foreign cars.
3TTA technical the greatest height an aircraft can fly at or the level of the clouds

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