Wise counselor (6)
I believe the answer is:
mentor
'wise counselor' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for mentor that I've seen before include "Wise and experienced counsellor" , "One guiding" , "Somebody advising" , "Truster advisor" , "Wise counsellor (of protege)" .)