Look after ones intellect (4)
I believe the answer is:
mind
This might be a double definition.
'look after' is the first definition.
(I've seen this before)
'ones intellect' is the second definition.
'mind' can be an answer for 'intellect' (synonyms). I am not sure about the 'ones' bit.
Can you help me to learn more?
(Other definitions for mind that I've seen before include "This can be made up" , "Object to; take care of" , "Seat of the faculty of reason" , "Inclination" , "Intellect; object to" .)