Walks up or down, perhaps (5)

I believe the answer is:

steps

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'walks' is the definition.
(I've seen this in another clue)

I can't explain the rest of the clue.

(Other definitions for steps that I've seen before include "Small ladder" , "See 2" , "Stiles" , "Measures taken" , "stair" .)

I've seen this clue in the Evening Standard.

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