1 = RESIDENCE 1, 2a.
2 US a period of specialized medical training; the position of a resident.
3 hist. the official residence of the Governor-General's representative or other government agent at an Indian native court; the territory supervised by this official.
4 a musician's regular engagement at a club etc.
5 a group or organization of intelligence agents in a foreign country.
Useful english dictionary. 2012.