a person who is in charge of a worker, group, or organization

I asked my boss for a promotion

give (someone) orders in a domineering manner

he does not like being bossed around

you're always bossing us about

excellent; outstanding

that was a real boss move on his part

a stud on the centre of a shield

a heavy wooden shield with a metal boss

a large mass of igneous rock protruding through other strata

a cow

(formerly in South Africa under apartheid) Bureau of State Security