Semantron
Origin
From Ancient Greek σήμαντÏον (semantron, "a seal, signet, in MGr. a semantron"), from σημαίνειν (semainein, "to show by a sign, signify, in MGr. strike a semantron"), from σῆμα (sema, "mark, sign").
Noun
- A percussion instrument used chiefly in Eastern Orthodox monasteries to summon the brethren to prayer or to lead processions.