Figure girl collects rubbish (6)
I believe the answer is:
statue
'figure' is the definition.
(statue is a kind of figure)
'girl collects rubbish' is the wordplay.
'girl' becomes 'sue' (**).
'collects' means one lot of letters goes inside another.
'rubbish' becomes 'tat' (I've seen this before).
'sue' enclosing 'tat' is 'STATUE'.
(Other definitions for statue that I've seen before include "A carved or sculpted figure" , "Large figure" , "Solid representation of the human form" , "Modelled figure of a human or animal" , "Three-D human representation" .)