Start to chop wood for money (4)
I believe the answer is:
cash
'money' is the definition.
(thesaurus)
'start to chop wood' is the wordplay.
'start to' says to take the initial letters.
'wood' becomes 'ash' (I've seen this before**).
The initial letter of 'chop' is 'c'.
'c'+'ash'='CASH'
'for' acts as a link.
(Other definitions for cash that I've seen before include "Money in the form of notes and coins" , "bread" , ""Readies"" , "Funds" , "Singer Johnny, d. 2003" .)