Rum diluted for machine-wrecker (7)
I believe the answer is:
luddite
'wrecker' is the definition.
(I've seen this before)
'rum diluted' is the wordplay.
'rum' indicates an anagram (rum can mean strange or unusual).
'diluted' is an anagram of 'LUDDITE'.
'for machine' acts as a link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for luddite that I've seen before include "Diluted (anag) - opponent of technological innovation" , "Diluted by opposer of new technology" , "Person who opposes the introduction of new technology" , "Opponent of new technology" , "Mechanisation resister" .)