A proper noun "mason" represents a number of places in the united states, including towns, cities, and unincorporated communities in various states.

(informal) Ellipsis of George Mason University..

A Freemason.

A bricklayer, one whose occupation is to build with stone or brick

One who prepares stone for building purposes.

A member of the fraternity of Freemasons. See Freemason.

(transitive, normally with a preposition) To build stonework or brickwork about, under, in, over, etc.; to construct by masons