Bundle of money
I believe the answer is:
wad
'bundle of money' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for wad that I've seen before include "Pad of loose material used for packing" , "Small mass of soft material" , "A thick bundle, maybe of money" , "Bundle of soft material or of banknotes" , "Lump or bundle of soft material" .)