hemistich

noun

hemi·​stich ˈhe-mi-ˌstik 

: half a poetic line of verse usually divided by a caesura

Word History

Etymology

Latin hemistichium, from Greek hēmistichion, from hēmi- + stichos line, verse; akin to Greek steichein to go — more at stair

First Known Use

1575, in the meaning defined above