Massacre, n.
Etymology: [F., fr. LL. mazacrium; cf. Prov. G. metzgern, metzgen, to kill cattle, G. metzger a butcher, and LG. matsken to cut, hew, OHG. meizan to cut, Goth. máitan.]
1. The killing of a considerable number of human beings under circumstances of atrocity or cruelty, or contrary to the usages of civilized people; as, the massacre on St. Bartholomew's Day.
2. Murder. [Obs.] Shak.
Syn. -- Massacre, Butchery, Carnage. Massacre denotes the promiscuous slaughter of many who can not make resistance, or much resistance. Butchery refers to cold-blooded cruelty in the killing of men as if they were brute beasts. Carnage points to slaughter as producing the heaped-up bodies of the slain. I'll find a day to massacre them all, And raze their faction and their family. Shak. If thou delight to view thy heinous deeds, Brhold this pattern of thy butcheries. Shak. Such a scent I draw Of carnage, prey innumerable ! Milton.
1 other Webster entry under this spelling
Massacre, v. t. [imp. & p. p. Massacred; p. pr. & vb. n. Massacring.]
To kill in considerable numbers where much resistance can not be made; to kill with indiscriminate violence, without necessity, and contrary to the usages of nations; to butcher; to slaughter; -- limited to the killing of human beings. If James should be pleased to massacre them all, as Maximian had massacred the Theban legion. Macaulay.
Shades of meaning
A massacre is the indiscriminate killing in numbers of the unresisting or defenseless; butchery is the killing of men rudely and ruthlessly as cattle are killed in the shambles. Havoc may not be so complete as massacre, nor so coldly brutal as butchery, but is more widely spread and furious; it is destruction let loose, and may be applied to organizations, interests, etc., as well as to human life; "as for Saul, he made havoc of the church," Acts viii, 3. Carnage (Latin caro, carnis, flesh) refers to widely scattered or heaped up corpses of the slain; slaughter is similar in meaning, but refers more to the process, as carnage does to the result; these two words only of the group may be used of great destruction of life in open and honorable battle, as when we say the enemy was repulsed with great slaughter, or the carnage was terrible.