Definitionen
1.NounOne who works: a person who performs labor for a living; traditionally, especially, manual labor.
2.NounA nonreproductive social insect, such as ant, bee, termite, or wasp.
A female ant, bee, termite or wasp.
3.NounA female ant, bee, termite or wasp.
4.NounA thread performing one instance of a particular task within a program."This FTP client spawns a separate worker for each file to be uploaded."