Cleaner is supercilious when cycling (5)

I believe the answer is:

loofa

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'cleaner' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

(Other definitions for loofa that I've seen before include "Bathroom sponge" , "American scrubber" , "scrubber from Bath" , "Fruit used for a sponge" , "Bath sponge" .)

I've seen this clue in The Times.

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