Advance, as money (4)
I believe the answer is:
lend
'advance as money' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for lend that I've seen before include "Supply (money) at interest" , "Give the use of for a time" , "Give (a quality) to" , "Advance, loan" , "Offer" .)