n. Homicide with malice aforethought; as legally defined, the unlawful killing of a human being, by a person of sound mind, by an act causing death within a year and a day thereafter, with premeditated malice.n. Slaughter; destruction.To kill; slay in or as in battle.To kill (a human being) with premeditated malice; kill criminally. See murder, n., 1.To kill or slaughter in an inhuman or barbarous manner.To destroy; put an end to.To abuse or violate grossly; mar by bad execution, pronunciation, representation, etc.: as, to murder the queen's English; the actor murdered the part he had to play.Synonyms Slay, Despatch, etc. See kill.