n. - One whose occupation is to build with stone or brick; also, one who prepares stone for building purposes.
n. - A member of the fraternity of Freemasons. See Freemason.
v. t. - To build stonework or brickwork about, under, in, over, etc.; to construct by masons; -- with a prepositional suffix; as, to mason up a well or terrace; to mason in a kettle or boiler.