Meaning : A person responsible for hiring workers.
Example :
The boss hired three more men for the new job.
Synonyms : hirer
Meaning : A person who exercises control and makes decisions.
Example :
He is his own boss now.
Meaning : A leader in a political party who controls votes and dictates appointments.
Example :
Party bosses have a reputation for corruption.
Synonyms : party boss, political boss
Meaning : A circular rounded projection or protuberance.
Synonyms : knob