(1):

(adv.) The act of taking one's own life voluntary and intentionally; self-murder; specifically (Law), the felonious killing of one's self; the deliberate and intentional destruction of one's own life by a person of years of discretion and of sound mind.

(2):

(adv.) One guilty of self-murder; a felo-de-se.

(3):

(adv.) Ruin of one's own interests.