Pass giving foul (6)
I believe the answer is:
defile
I believe this is a double definition.
'pass' is the first definition.
(defile is a kind of pass)
'foul' is the second definition.
('defile' can be a synonym of 'foul')
'giving' acts as a link.
(Other definitions for defile that I've seen before include "Foul - pass" , "Create pollution" , "Befoul" , "Fed lie to pollute" , "Mar; narrow gorge" .)