A resident is a person who lives in a particular place permanently, or for an extended period of time, i.e. who maintains a residence or a domicile in that place.
A resident alien is a person who is living in a particular foreign country for an extended period of time under authority or color of law as opposed to a tourist who is visiting the country without the intent to establish a residence in that country.
In British constitutional thought a Resident represents British interests/manages British affairs in those territories where Britain does not have sovereignty. He can also act as a de facto advisor or premier to the local sovereign in such situations (e g British Residency in British Malaya ). A Resident–General is a resident with control over lesser Residents or a Resident with a particularly important commission.
A resident bird or animal is one that does not migrate, but stays in the same location throughout the area.
The Residents are an avant garde music and visual arts group, active since the 1970s, known for being largely anonymous.