Hair spray, e.g. (7)

I believe the answer is:

aerosol

(Other definitions for aerosol that I've seen before include "See 17 down [CONTAINER]: under pressure" , "Sprayer" , "Substance sealed in container and released as fine spray" , "Pressurized container" , "Container with device for releasing contents as fine spray" .)

I've seen this clue in the Penny Press.

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