No unsettled area (6)
I believe the answer is:
colony
'area' is the definition.
(Colony is an example)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for colony that I've seen before include "Country controlled by another's settlers" , "Country under the political control of another and occupied by settlers" , "Dependency" , "New settlement abroad" , "Beavers' group" .)