Money provides weight (5)
I believe the answer is:
pound
I believe this clue is a double definition.
'money' is the first definition.
(I've seen this before)
'weight' is the second definition.
(pound is a kind of weight)
'provides' acts as a link.
(Other definitions for pound that I've seen before include "Enclosure for stray animals" , "Lay on, money" , "L" , "# and lb" , "100 6 [PENNIES]" .)