Turn the spray on the footwear (4)

I believe the answer is:

hose

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'the footwear' is the definition.
(hose is a kind of footwear)

I cannot understand how the rest of the clue works.

(Other definitions for hose that I've seen before include "plumbing connection" , "One with doublet; a tube" , "Flexible pipe for liquid" , "Breeches (worn with a doublet)" , "Piping" .)

I've seen this clue in the Sydney Morning Herald.

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