Worker

One who, or that which, works; a laborer; a performer; as, a worker in brass.

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.

a member of the working class (not necessarily employed); "workers of the world — unite!"

sterile member of a colony of social insects that forages for food and cares for the larvae