A master's degree.

Third-person singular simple present indicative form of master

plural of master

A master's degree. / A person holding a master's degree, as a title.

A surname originating as an occupation

Becoming professional in the use of something; having mastery of. / The process by which an audio recording is mastered.

present participle of master

A teacher in charge of a boarding house at a boarding school. / A teacher in charge of a sports house at a school.

plural of master bedroom

A comprehensive document that sets out an overall strategy; the strategy itself. / (architecture) A small-scale graphic outline that shows all the major elements of a project.