The air force of the British armed forces

(construction) Asphalt produced by blowing air through molten asphalt to raise its softening point and modify other properties.

Current popular opinion or trends of a very large group of people, a city or a country.

(idiomatic) To speak a stream of bad language; to curse and swear.

(idiomatic) From nowhere or nothing; from a non-existent or unknown source.

A person whose responsibility was to defend a particular building during an air raid, ensure the blackout was complete, and assist civilians to an air-raid shelter.

A museum where the exhibitions are located outdoors.

plural of air-raid shelter

plural of dead-air space

(transitive, idiomatic) To have any desire, idea, or plan that is unlikely to be realized; to imagine visionary projects or schemes; to have an idle fancy or a pipe dream; to daydream.