<p><strong>Noun</strong></p><ul><li>A person or thing that works.</li><li>A laborer or employee: steel workers.</li><li>A person engaged in a particular field, activity, or cause: a worker in psychological research; a worker for the Republican Party.</li><li>Entomology: a member of a caste of sexually underdeveloped, nonreproductive bees, specialized to collect food and maintain the hive.</li><li>A similar member of a specialized caste of ants, termites, or wasps.</li><li>Printing: one of a set of electrotyped plates used to print from (molder 2).</li><li>Any of several rollers covered with card clothing that work in combination with the stripper rollers and the cylinder in the carding of fibers.</li></ul>