1. A group of emigrants or their descendants who settle in a distant territory but remain subject to or closely associated with the parent country. 2. A territory thus settled. 3. A region politically controlled by a distant country; a dependency. 4. the American colony in Paris. 5. The area occupied by such a group. 6. an island penal colony. 7. A group of the same kind of animals, plants, or one-celled organisms living or growing together. 8. A visible growth of microorganisms, usually in a solid or semisolid nutrient medium.