Give clearance (9)

I believe the answer is:

tolerance

I believe this is a double definition.

'give' is the first definition.
(I've seen this before)

'clearance' is the second definition.
(thesaurus)

(Other definitions for tolerance that I've seen before include "Ability to endure pain" , "Understanding" , "resignation" , "example of permissiveness" , "See 10" .)

I've seen this clue in The Guardian.

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