Permit to go by (4)
I believe the answer is:
pass
This clue is a double definition.
'permit' is the first definition.
(I know that pass is a type of permit)
'to go by' is the second definition.
('pass' can be a synonym of 'go by')
(Other definitions for pass that I've seen before include "gap" , "approved" , "Graduate, perhaps? A" , "Progress" , "Cross-mountain route; permit" .)