Think what entertainer could do topless (4)

I believe the answer is:

muse

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'think' is the definition.
(to muse on something is to think about it)

I don't understand the remainder of the clue.

(Other definitions for muse that I've seen before include "Meditate on a goddess of the arts" , "Contemplate -- a goddess of the liberal arts" , "Ponder in meditative way" , "Cogitate" , "Inspiring goddess" .)

I've seen this clue in The Sun.

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