Arab's cash I brought through Paris airport as usual (10)
I believe the answer is:
ordinarily
'as usual' is the definition.
(thesaurus)
'arab's cash i brought through paris airport' is the wordplay.
I cannot really see how this works, but
'cash' could be 'l' (The pound sterling symbol is an elaborate L) and 'l' is found in the answer.
'i' could be 'a' and 'a' is found within the answer.
'through' could be 'in' and 'in' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for ordinarily that I've seen before include "following the custom" , "As a rule" , "In the usual run of things" .)