More than one permit is acceptable (6)

I believe the answer is:

passes

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'more than one permit' is the definition.
(pass is a kind of permit)

I don't understand how the rest of the clue works.

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(Other definitions for passes that I've seen before include "Written permissions for absences" , "never fails to get?" , "Time always does it" , "Dies, euphemistically" , "'Men seldom make . . . at girls who wear glasses'" .)

I've seen this clue in the Evening Standard.

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