Think about a heavenly female (4)

I believe the answer is:

muse

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'think about' is the definition.
(thesaurus)

I cannot understand how the rest of the clue works.

(Other definitions for muse that I've seen before include "Source of inspiration; rock group" , "Inspiring goddess" , "Goddess; rock group" , "Contemplate -- a goddess of the liberal arts" , "Think - goddess of the liberal arts" .)

I've seen this clue in the Evening Standard.

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