Emily Dickinson Lexicon

MA'SON, n. [ma'sn; Fr. maçon; Arm. maçzonn; D. metselaar. In Sp. mazoneria is masonry, as if from mazo, a mallet, maza, a club, a mace. It is probably from the root of mix or mash, or moe probably of mass, and denotes one that works in mortar. See Mass.]

1. A man whose occupation is to lay bricks and stones, or to construct the walls of buildings, chimneys and the like, which consist of bricks or stones.
2. A member of the fraternity of free-masons.