The means to rewrite the law (6)
I believe the answer is:
wealth
'the means' is the definition.
(thesaurus)
'rewrite the law' is the wordplay.
'rewrite' indicates anagramming the letters.
'the'+'law'='thelaw'
'thelaw' is an anagram of 'WEALTH'.
'to' is the link.
(Other definitions for wealth that I've seen before include "Prosperity" , "State of luxury" , "was common under Cromwell" , "Assets" , "An abundance of valuable possessions or money" .)