Lie about endless money (4)
I believe the answer is:
loll
'lie about' is the definition.
(loll means to lie around)
'endless money' is the wordplay.
'endless' means to remove the last letter.
'money' becomes 'lolly' (slang term).
'lolly' with its last letter taken off is 'LOLL'.
(Other definitions for loll that I've seen before include "Lounge - loaf" , "Lean back in lazy and relaxed manner" , "Drop" , "Hang loosely; sit lazily" , "Lie sprawled" .)