A principal mountain mass. / A block of the earth's crust bounded by faults or flexures and displaced as a unit without internal change; normally consists of gneisses and schists

(US, historical, colloquial) Pronunciation spelling of master, representing African-American Vernacular English.

A state of the United States.

(astronomy, physics) A hypothetical class of particle, proposed to explain the dark matter problem.

Very large in size or extent. / Very large or bulky and heavy and solid. / (informal) To a very great extent; total, utter. / (colloquial) Of particularly exceptional quality or value; awesome.

(mineralogy) A homogeneous mass of rock, not layered and without an obvious crystal structure. / (MLE, slang) A group of people from a locality, or sharing a collective aim, interest, etc.

(computing) having many individual or distributed processing units and thus able to carry out many simultaneous calculations

An online computer role-playing game in which a large number of players can interact with one another.

Having no mass.

Heavy; massive.