What does alienation mean?
The definition of alienation
Al`ien*a”tion, n.
Etym: [F. aliénation, L. alienatio, fr. alienare, fr. alienare. See Alienate.]

1 The act of alienating, or the state of being alienated.
2 (Law)
A transfer of title, or a legal conveyance of property to another.
3 A withdrawing or estrangement, as of the affections. The alienation of his heart from the king. Bacon.
4 Mental alienation; derangement of the mental faculties; insanity; as, alienation of mind.

Synonyms
— Insanity; lunacy; madness; derangement; aberration; mania; delirium; frenzy; dementia; monomania. See Insanity.