Noah Webster's Dictionary 1. (n.) 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. Int. Standard Bible Encyclopedia SUICIDE su'-i-sid. See CRIMES.