One who is conspicuously active in carrying out any occupational or professional functions.
One who is politically active in the role of a citizen; especially, one who campaigns for change.
Behaving as an activist.
A person who performs labor for a living, especially manual labor.
A nonreproductive social insect, such as ant, bee, termite, or wasp.
A female ant, bee, termite or wasp.
A thread performing one instance of a particular task within a program.