The Office cast lack power (9)
I believe the answer is:
workplace
'the office' is the definition.
(thesaurus)
'cast lack power' is the wordplay.
'cast' indicates anagramming the letters (letters are dispersed or cast around).
'lack'+'power'='lackpower'
'lackpower' with letters rearranged gives 'WORKPLACE'.
(Another definition for workplace that I've seen is " Office -- factory".)
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