- The slaughter or slaying of one's self, suicide.
- Against self-slaughter, There is a prohibition so divine, That cravens my weak hand. --Shak., Cymbeline
1595, self- +"Ž slaughter, possibly taken as a shortening of the phrase against self-slaughter (“slaughter against one's self"). Compare Old English seolfcwala (“suicide"), Old English Ägenslaga (“suicide").