1. One who, or that which, works; a laborer; a performer; as, a worker in brass. Professors of holiness, but workers of iniquity. (Shak)
2. (Science: zoology) One of the neuter, or sterile, individuals of the social ants, bees, and white ants. The workers are generally females having the sexual organs imperfectly developed. See Ant, and White ant, under White.