Sweeney Todd work, contentious musical, censored (7)

I believe the answer is:

haircut

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But I can't explain it at all! Could you help me understand?

(Other definitions for haircut that I've seen before include "Bob, perhaps" , "Bob possibly" , "Bob, say" , "Trim on top" , "DA, for example" .)

I've seen this clue in The Times.

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