hecatomb
Hecatomb (noun) means a great public sacrifice to the gods, originally of a hundred oxen; also, a great number of animals reserved for such a sacrifice.
Etymology
The noun is a learned borrowing from Latin hecatombē (“great sacrifice of a hundred oxen, hecatomb”), from Ancient Greek ἑκατόμβη (hekatómbē, “great sacrifice of a hundred oxen, hecatomb; any animal sacrifice or large sacrifice”, from ἑκᾰτόν (hekătón, “hundred”) + βοῦς (boûs, “cattle, cow, ox”)). The verb is derived from the noun.