alien 1 /'ā-lē-ən, 'āl-yən/ adj [Latin alienus not one's own, foreign]: relating, belonging, or owing allegiance to another country or government
alien 2 n: a foreign-born resident who has not been naturalized and is still a subject or citizen of a foreign country
illegal alien s
an alien admitted to the United States for permanent residence — U.S. Code
alien 3 vt: alienate
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.