worker
Pronunciation:
/ˈwɜː.kə//ˈwɝ.kɚ/noun
Definitions
A person who performs labor for a living, especially manual labor.
A nonreproductive social insect, such as ant, bee, termite, or wasp.
A thread performing one instance of a particular task within a program.
Example: This FTP client spawns a separate worker for each file to be uploaded.