For example, a rounded figure and personality (3)
I believe the answer is:
ego
'personality' is the definition.
(I've seen this in another clue)
'for example a rounded figure' is the wordplay.
'for example' becomes 'e.g.' (short for 'exempli gratia', 'for example' in Latin).
'a rounded figure' becomes 'o' (I can't justify this - if you can you should believe this answer much more).
'eg'+'o'='EGO'
'and' acts as a link.
Can you help me to learn more?
(Other definitions for ego that I've seen before include "One's self-image" , "One's image of oneself" , "Sense of identity" , "Self-confidence" , "In Virgil I" .)