—n. 1. the unnecessary, indiscriminate killing of a large number of human beings or animals, as in barbarous warfare or persecution or for revenge or plunder.
2. a general slaughter, as of persons or animals: the massacre of millions during the war. 3. Informal.a crushing defeat, esp. in sports.
—v.t. 1. to kill unnecessarily and indiscriminately, esp. a large number of persons.
2. Informal.to defeat decisively, esp. in sports.