Permit such a hindrance (3)

I believe the answer is:

let

I believe this is a double definition.

'permit' is the first definition.
(synonyms)

'such a hindrance' is the second definition.
(let can mean an obstruction)

(Other definitions for let that I've seen before include "Allow; leased" , "& 15 Triple (anag.)" , "Won't stop you" , "Allow; tennis fault" , "Umpire's decision" .)

I've seen this clue in The Irish News.

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