Suicide \Su"i*cide\, n. [L. sui of one's self (akin to suus one's own) + caedere to slay, to kill. Cf. So, adv., Homicide.]

1. 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. One guilty of self-murder; a felo-de-se.

3. Ruin of one's own interests. ``Intestine war, which may be justly called political suicide.'' --V. Knox.

Source: Webster's Revised Unabridged Dictionary (1913)