Definition Of master
a man in charge of an organization or group, in particular.
They had to act according to the dictates of the political masters .
a man in charge of an organization or group.
a man who has people working for him, especially servants or slaves.
he acceded to his master's wishes
a person who holds a second or further degree from a university or other academic institution (only in titles and set expressions).
a master's degree
a ship or boat with a specified number of masts.