secondo

noun

se·​con·​do si-ˈkōn-(ˌ)dō 

-ˈkän-

plural secondi si-ˈkōn-(ˌ)dē 

-ˈkän-

: the second part in a concerted piece

especially : the lower part (as in a piano duet)

Word History

Etymology

Italian, from secondo, adjective, second, from Latin secundus

First Known Use

1792, in the meaning defined above