Pass as money (5)
I believe the answer is:
spend
'pass' is the definition.
('spend' can be a synonym of 'pass')
'money' is the wordplay.
I cannot quite understand how this works, but
'money' could be 'p' and 'p' is present in the answer.
The remaining letters 'send' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'as' acts as a link.
Can you help me to learn more?
(Other definitions for spend that I've seen before include "Part with money" , "Pay out or use up" , "Pass time or pay out" , "Lay out money" , "Pay out (on goods)" .)