Browbeat, boss around (8)
I believe the answer is:
domineer
I believe this clue is a double definition.
'browbeat' is the first definition.
(I know that domineer is a kind of browbeat)
'boss around' is the second definition.
(domineering is a kind of bossing around)
(Other definitions for domineer that I've seen before include "Dine more and be overbearing" , "Ride roughshod over" , "Tyrannise" , "Ore mined badly could tend to overbear" , "Exercise power over in an autocratic manner" .)