A weaving machine set up to make money (5)
I believe the answer is:
moola
'money' is the definition.
(informal term for money)
'a weaving machine set up' is the wordplay.
'weaving machine' becomes 'loom' (machine for weaving thread).
'set up' says the letters should be written in reverse.
'a'+'loom'='aloom'
'aloom' in reverse letter order is 'MOOLA'.
'to make' is the link.
(Other definitions for moola that I've seen before include "Dosh, dough" , "11 [lolly]" , "Money (slang)" , "Ackers, lolly" .)