A wide hay structure affording concealment (8)

I believe the answer is:

hideaway

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'concealment' is the definition.
(thesaurus)

'a wide hay structure' is the wordplay.
'structure' indicates an anagram.
'a'+'wide'+'hay'='awidehay'
'awidehay' anagrammed gives 'HIDEAWAY'.

'affording' acts as a link.
This may not be right. It may belong to another bit of the clue.

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(Other definitions for hideaway that I've seen before include "Place where one won't be disturbed" , "Place of retreat" , "Haven, retreat; bolt hole" , "den" , "Shelter" .)

I've seen this clue in the Evening Standard.

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