Cider girl? (5)

I believe the answer is:

rosie

I'm a little stuck... Click here to teach me more about this clue!

'cider girl?' is the definition.
(I've seen this before)

'girl?' is the wordplay.
I cannot really see how this works, but
'girl?' could be 'ros' and 'ros' is present in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for rosie that I've seen before include "Female" , "literary drinking companion" , "- - Lee (sl.)" , "It could be tea" , "Cider with - (Laurie Lee)" .)

I've seen this clue in The Sun.

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