1. The person who is in charge of the organisation where you work. English = boss, head.
2. A person who is in charge of a group of workers; or a person who is in charge of or in control of a business or other organisation. English = foreman; manager.
3. A person who is in charge of a ship, plane, group of soldiers, or a sports team. English = captain.
4. Someone who is more important than you or who has more authority. English = superior, chief.