Start chopping wood for money (4)
I believe the answer is:
cash
'money' is the definition.
(cash is a type of money)
'start chopping wood' is the wordplay.
'start' suggests taking the first letters.
'wood' becomes 'ash' (wood from an ash tree).
The first letter of 'chopping' is 'c'.
'c'+'ash'='CASH'
'for' acts as a link.
(Other definitions for cash that I've seen before include "Brass" , "Spondulicks" , ""Readies"" , "Funds" , "Ready money" .)