Using credit card to hide salary cap (3)
I believe the answer is:
via
'using' is the definition.
(I've seen this in another clue)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for via that I've seen before include "Roman road" , "Passing through" , "A Roman way" , "By way of - in Latin" , "By means of" .)