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Be tight somehow, at work in the circus (3,3,3)

Ross

I believe the answer is:

the big top

'circus' is the definition.
(thesaurus)

'be tight somehow at work' is the wordplay.
'somehow' indicates an anagram.
'at' says to put letters next to each other.
'work' becomes 'op' (abbreviation for opus).
'be'+'tight'='betight'
'betight' anagrammed gives 'thebigt'.
'thebigt'+'op'='THE BIG TOP'

'in the' acts as a link.

I've seen this clue in the Sydney Morning Herald.
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