Massacre.
Synonyms:
butchery, carnage, havoc, slaughter.
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.