plural of illegal alien

(US, law) A person born outside the United States who has legally established temporary or permanent residence in the United States, but has not become a United States citizen.

plural of resident alien

The abduction of a person by extraterrestrials.

(sometimes offensive) A person who is within the boundaries of a political state without the authorization of the government of that state; a national of another country who has entered or stayed without permission.

plural of alien priory

A small religious house dependent on a large monastery in some other country.

plural of alien abduction

(botany) A plant that appears with no apparent human assistance but does not develop a sustained population.

plural of casual alien