noun
- a person or thing that works.
- a laborer or employee: steel workers.
- a person engaged in a particular field, activity, or cause: a worker in psychological research; a worker for the Republican Party.
- Entomology.
- a member of a caste of sexually underdeveloped, nonreproductive bees, specialized to collect food and maintain the hive.
- a similar member of a specialized caste of ants, termites, or wasps.
- Printing. one of a set of electrotyped plates used to print from (contrasted with molder2).
- any of several rollers covered with card clothing that work in combination with the stripper rollers and the cylinder in the carding of fibers.