masacrar bedeutet auf Englisch

butcher [butchered, butchering, butchers]▼(to kill brutally)
verb
[UK: ˈbʊ.tʃə(r)] [US: ˈbʊ.tʃər]

massacre [massacred, massacring, massacres]▼(to kill in considerable numbers)
verb
[UK: ˈmæ.səkə(r)] [US: ˈmæ.səkər]They called it a massacre. = Ellos lo llamaron una masacre.

slaughter [slaughtered, slaughtering, slaughters]▼(to massacre people in large numbers)
verb
[UK: ˈslɔː.tə(r)] [US: sˈlɒ.tər]He slaughtered them. = Los masacró.