(1):

(n.) A transfer of title, or a legal conveyance of property to another.

(2):

(n.) A withdrawing or estrangement, as of the affections.

(3):

(n.) Mental alienation; derangement of the mental faculties; insanity; as, alienation of mind.

(4):

(n.) The act of alienating, or the state of being alienated.