Other forms: massacred; massacres; massacring
A massacre is a big bloody mess of killing, and usually for no good reason. Not that there’s ever a good reason for killing, but massacres are especially pointless and gory.
It’s unclear where the word massacre came from, but possibly it was the Old French word macacre, which means “slaughterhouse.” As a noun, massacre is a brutal slaughter of humans or animals, and it can be a verb as well, like when an army massacres an entire village of innocent people. Pronounce it like MASS-uh-ker, and remember to spell it with an acre at the end, which is how much land is needed to bury the bodies after a massacre.