Tricky stairs, Ben - slide down these (9)

I believe the answer is:

banisters

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'slide down these' is the definition.
The definition suggests an adverb but the answer is not.

'tricky stairs ben' is the wordplay.
'tricky' indicates anagramming the letters.
'stairs'+'ben'='stairsben'
'stairsben' anagrammed gives 'BANISTERS'.

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I've seen this clue in The Globe and Mail.

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