(idiomatic) A person who has a competent grasp of many skills but who is not outstanding in any one.

(education) A class, typically in a performing art such as music or drama, in which a teacher listens to and critiques the performance of individual students, one at a time, while the other students look on.

An action which demonstrates great skill or artistry.

(military, US) A non-commissioned officer in the United States Army, ranking above sergeant first class and below sergeant major; equal in grade and pay to a first sergeant.

Clipping of master's degree.

A postgraduate degree which aims to assist students in developing a mastery for a particular academic field or profession.

A large four-masted sailboat.

(informal, biology) The pituitary gland.

plural of master gland

(archaic) second-person singular simple present form of master