That lady entered bundle of cash to be laundered (6)
I believe the answer is:
washed
'be laundered' is the definition.
(I've seen this before)
'that lady entered bundle of cash' is the wordplay.
'that lady' becomes 'she' ('she' refers to a woman).
'entered' means one lot of letters goes inside another.
'bundle of cash' becomes 'wad' (I've seen this in another clue).
'she' placed into 'wad' is 'WASHED'.
'to' is the link.
(Other definitions for washed that I've seen before include "spotless?" , "Used soap and water" , "Cleaned with liquid" , "Wall up; imprison" , "free of sin" .)