Crossword Genius

Girl, ten, straightened out curl (7)

Ross

I believe the answer is:

ringlet

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

'curl' is the definition.
(I know that curl can be written as ringlet)

'girl ten straightened out' is the wordplay.
'girl ten' anagrams to 'RINGLET'.
Though, I am not clear how this is indicated.

Can you help me to learn more?

(Other definitions for ringlet that I've seen before include "sort of lock" , "Curl or tendril" , "Long curl of hair" , "Hair feature" , "A curl - kind of tingler" .)

I've seen this clue in The Sun.
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