Playwright of Australian descent, it's said (7)

I believe the answer is:

osborne

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'playwright' is the definition.
(I've seen this before)

I cannot understand how the remainder of the clue works.

(Other definitions for osborne that I've seen before include "Politician" , "Q. Victoria's IOW home" , "13 across's IOW house" , "Author of "Look Back in Anger"" , "Chancellor" .)

I've seen this clue in The Telegraph.

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