noun one excluded from certain privileges; one alienated or estranged; as, aliens from god's mercies.
2. alien ·vt to alienate; to estrange; to transfer, as property or ownership.
3. alien ·adj not belonging to the same country, land, or government, or to the citizens or subjects thereof; foreign; as, alien subjects, enemies, property, shores.
4. alien ·adj wholly different in nature; foreign; adverse; inconsistent (with); incongruous;
followed by from or sometimes by to; as, principles alien from our religion.
5. alien ·noun a foreigner; one owing allegiance, or belonging, to another country; a foreign-born resident of a country in which he does not possess the privileges of a citizen. hence, a stranger. ·see alienage.