Principal in group (3,3)
I believe the answer is:
top dog
(Other definitions for top dog that I've seen before include "Leading light (informal)" , "Capo" , "Leader of a group" , "big cheese?" , "Person in charge" .)
I believe the answer is:
top dog
(Other definitions for top dog that I've seen before include "Leading light (informal)" , "Capo" , "Leader of a group" , "big cheese?" , "Person in charge" .)