n. The indiscriminate killing of human beings; the unnecessary slaughter of a number of persons, as in barbarous warfare or persecution, or for revenge or plunder: as, the massacre of Glencoe: sometimes applied also to the wholesale killing of wild animals.n. In heraldry, a pair of antlers or attires attached to a piece of the skull, used as a bearing.To kill with attendant circumstances of atrocity; butcher; slaughter: commonly used in reference to the killing of a large number of human beings at once, who are not in a condition to defend themselves.Synonyms Murder, Slaughter, etc. See kill.