Boyfriend beat up after losing finals (4)

I believe the answer is:

beau

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'boyfriend' is the definition.
(I know that boyfriend is a type of boyfriend)

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for beau that I've seen before include "young man" , "An old-fashioned boy friend - like Brummel?" , "Handsome young lover" , "Dandy - boyfriend" , "An old boy friend or dandy" .)

I've seen this clue in the Sydney Morning Herald.

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