*mason*

n. Opposition to Freemasonry. [ 1913 Webster ]

n. One of an ancient and secret association or fraternity, said to have been at first composed of masons or builders in stone, but now consisting of persons who are united for social enjoyment and mutual assistance. [ 1913 Webster ]

a. Pertaining to, or resembling, the institutions or the practices of freemasons; as, a freemasonic signal. [ 1913 Webster ]

n. The institutions or the practices of freemasons. [ 1913 Webster ]

n. [ F. maçon, LL. macio, machio, mattio, mactio, marcio, macerio; of uncertain origin. ] [ 1913 Webster ]

1. One whose occupation is to build with stone or brick; also, one who prepares stone for building purposes. [ 1913 Webster ]

2. A member of the fraternity of Freemasons. See Freemason. [ 1913 Webster ]

Mason bee (Zool.), any one of numerous species of solitary bees of the genus Osmia. They construct curious nests of hardened mud and sand. --
Mason moth (Zool.), any moth whose larva constructs an earthen cocoon under the soil. --
Mason shell (Zool.), a marine univalve shell of the genus Phorus; -- so called because it cements other shells and pebbles upon its own shell; a carrier shell. --
Mason wasp (Zool.), any wasp that constructs its nest, or brood cells, of hardened mud. The female fills the cells with insects or spiders, paralyzed by a sting, and thus provides food for its larvae [ 1913 Webster ]

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. [ 1913 Webster ]

prop. a. Of or pertaining to Freemasons or to their craft or mysteries. [ 1913 Webster ]

prop. n. [ trademark. ] A type of fiberboard. [ trademark ] [ WordNet 1.5 ]