hecatomphonia

(τὰ ἑκατομφόνια, from ἑκατόν, “a hundred,” and φονεύω, “to kill”). A solemn sacrifice offered by the Messenians to Zeus, when any of them had killed a hundred enemies. Aristomenes is said to have offered up this sacrifice three times in the course of the Messenian wars against Sparta (Pausan. iv. 19).