Webster's Revised Unabridged Dictionary · 1913

Hecatomb

Hecatomb , noun

[Latin hecatombe, Greek {not transcribed}; {not transcribed} hundred + {not transcribed} ox: compare French hécatombe.]

(Antiquities) A sacrifice of a hundred oxen or cattle at the same time; hence, the sacrifice or slaughter of any large number of victims.
Slaughtered hecatombs around them bleed. — Addison
More than a human hecatomb. — Byron