Synonyms for Butchery (same or very similar meaning)
WordNet sense 1 (a building where animals are butchered):
abattoir, shambles, slaughterhouseWordNet sense 2 (the business of a butcher):
butcheringWordNet sense 3 (the savage and excessive killing of many people):
carnage, massacre, slaughter, carnage, mass murderFrom the ODE community, based on WordNetadd/edit