n A convex protuberance in hammered work, especially the rounded projection in the centre of a shield.
n (archery) the target block, made of foam but historically made of hay bales, to which a target face is attached.
n (video games) An enemy, often at the end of a level, that is particularly challenging and must be beaten in order to progress in, or complete, the game.
v (transitive) To exercise authoritative control over; to lord over; to boss around; to tell (someone) what to do, often repeatedly.