From Middle English manslaȝter, manslauter, equivalent to man + slaughter, or taken as an adaptation of Old English mannslieht, mannsleaht (“homicide”), from mann (“man, person”) + slieht, sleaht (“stroke, slaying”), see manslaught. Cognate with Scots manslauchter (“homicide”). Compare also Old Frisian monslaga (“murder”).
- (obsolete) The slaying of a human being.
- (law) The unlawful killing of a human, either in negligence or incidentally to the commission of some unlawful act, but without specific malice, or upon a sudden excitement of anger.