She has a small figure (5)

I believe the answer is:

dolly

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'figure' is the definition.
(thesaurus)

'she has a small' is the wordplay.
'she' becomes 'Doll'.
'has a small' becomes 'y' (I can't explain this - if you can you should give a lot more credence to this answer).
'doll'+'y'='DOLLY'

Can you help me to learn more?

(Other definitions for dolly that I've seen before include "Child's plaything" , "Offering of flowers" , "loved by little girl?" , "attractive girl" , "See 17" .)

I've seen this clue in the Evening Standard.

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