Get the better of the boss (6)
I believe the answer is:
master
This could be a double definition.
'get the better' is the first definition.
'master' can be an answer for 'get' (thesaurus). I'm unsure of the 'the better' bit.
'the boss' is the second definition.
(I have seen 'The boss' mean 'master' so perhaps 'boss' could also mean 'master')
'of' is the link.
Can you help me to learn more?
(Other definitions for master that I've seen before include "Teacher to gain control" , "Expert" , "Overcome; original copy" , "One in complete control; great artist" , "Overcome; original film" .)