Crossword Genius

Regulars seen in hoody plus swept back hairstyle (4)

Ross

I believe the answer is:

updo

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'hairstyle' is the definition.
(I know that updo is a hairstyle)

I don't understand the remainder of the clue.

Can you help me to learn more?

(Another definition for updo that I've seen is " Hairstyle".)

I've seen this clue in The Irish Times.
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