One that has control over another person, a group master chef dishes persons, or a thing, especially:a. The owner or keeper of an animal: The dog ran toward its master. One who has control over or ownership of something: the master of a large tea plantation. The man who serves as the head of a household.

I had to admit that I had met my master and so conceded the game. One who acts out the role of the dominating partner in a sadomasochistic relationship. The captain of a merchant ship. One whose teachings or doctrines are accepted by followers. A male teacher, schoolmaster, or tutor. One who holds a master’s degree. An artist or performer of great and exemplary skill.

A worker qualified to teach apprentices and carry on the craft independently. An expert: a master of three languages. Used formerly as a title for a man holding a naval office ranking next below a lieutenant on a warship. Used as a title for a man who serves as the head or presiding officer of certain societies, clubs, orders, or institutions.