coryphaeus

noun

cor·​y·​phae·​us ˌkȯr-ə-ˈfē-əs 

ˌkär-

plural coryphaei ˌkȯr-ə-ˈfē-ˌī 

ˌkär-

1

: the leader of a party or school of thought

2

: the leader of a chorus

Word History

Etymology

Latin, leader, from Greek koryphaios, from koryphē summit

First Known Use

1655, in the meaning defined at sense 1