semantron
noun
se·man·tron
sə̇ˈman‧ˌträn
plural -s
: a wooden plank or an iron bar that gives a sound like a gong when struck with a mallet and that takes the place of a bell in Eastern Orthodox churches
Word History
Etymology
Late Greek sēmantron sign, signal, semantron, from Greek, seal, sign, from sēmainein to signify
First Known Use
1849, in the meaning defined above