Cement railings enclose singular gut (7)

I believe the answer is:

entrail

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'singular gut' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'cement railings enclose' is the wordplay.
'enclose' indicates a hidden word (I've seen 'enclosing' mean this (the answer is enclosed by the clue)).
'ENTRAIL' is hidden within 'cement railings'.

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I've seen this clue in the Sydney Morning Herald.

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