(informal, biology) The pituitary gland.

plural of master gland

An exceptionally skillful chess player, especially one who has won a major competition.

(data management) Reference data.

(sociology) A social status that is the primary socially identifying characteristic of an individual, such as being the queen.

A title, especially of chivalric orders, fraternal orders and fraternal organizations.

Any of various early European painters whose works are regarded as superlative. / A painting by an Old Master.

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.

plural of question-master

A quizmaster.