Part of the psyche (5)
I believe the answer is:
anima
'part of the psyche' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for anima that I've seen before include "Inward part of the psyche" , "Inner personality (psychol.)" , "Showing true inner self" , "Feminine part of the personality" , "Part of psyche directed inwards" .)