D defs.my
Entry 1 sense Webster, 1913

Hecatomb

· Hec·a·tomb · IPA /ˈhɛkətoʊm/
01 n. A sacrifice of a hundred oxen or cattle at the same time; hence, the sacrifice or slaughter of any large number of victims.
  1. 1.
    A sacrifice of a hundred oxen or cattle at the same time; hence, the sacrifice or slaughter of any large number of victims.(Antiq.)
    “Slaughtered hecatombs around them bleed.” Addison.
    “More than a human hecatomb.” Byron.