Crossword Genius

Working for rum, a baler or thresher? (4,8)

Ross

I believe the answer is:

farm labourer

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'thresher?' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'working for rum a baler' is the wordplay.
'working' is an anagram indicator.
'for'+'rum'+'a'+'baler'='forrumabaler'
'forrumabaler' with letters rearranged gives 'FARM-LABOURER'.

'or' acts as a link.

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I've seen this clue in The Sunday Times and The Times.
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