migrant

noun

1. A migratory animal, in particular a migratory bird.

   “Gilbert White writes, "I have consulted a sportsman who tells me that […] often there are amongst them little parties of small blue doves which he calls rockiers. The food of these numberless migrants was beechmast and some acorns."”

2. Traveller or worker who moves from one region or country to another.
3. (informal)A person who leaves one place in order to permanently settle in another.

   “These first English migrants to Jamestown endured terrible disease and arrived during a period of drought and colder-than-normal winters. The migrants to Roanoke on the outer banks of Carolina, where the English had gone in the 1580s, disappeared. And a brief effort to settle the coast of Maine in 1607 and 1608 failed because of an unusually bitter winter.”

   ““But once you lose everything— your home, your school, your clinic, your road, your church—then it’s an impossible situation. You become an environmental migrant because you have to find those facilities in some other place.””

4. Any of various pierid butterflies of the genus Catopsilia. Also called an emigrant.

adj

1. Migratory.