Run downhill (5)

I believe the answer is:

piste

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'run downhill' is the definition.
The definition suggests a singular noun which matches the answer.

This is all the clue.

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(Other definitions for piste that I've seen before include "A ski run of compacted snow" , "Ski-slope" , "Ski slope" , "Ski track" , "Skiing trail" .)

I've seen this clue in The Guardian.

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