boss

1.
n. & v. colloq.
—n.
1 a person in charge; an employer, manager, or overseer.
2 US a person who controls or dominates a political organization.
—v.tr.
1 (usu. foll. by about, around) treat domineeringly; give constant peremptory orders to.
2 be the master or manager of.
Etymology: orig. US: f. Du. baas master
2.
n.
1 a round knob, stud, or other protuberance, esp. on the centre of a shield or in ornamental work.
2 Archit. a piece of ornamental carving etc. covering the point where the ribs in a vault or ceiling cross.
3 Geol. a large mass of igneous rock.
4 Mech. an enlarged part of a shaft.
Etymology: ME f. OF boce f. Rmc