halidom

noun

hal·​i·​dom ˈha-lə-dəm 

variants or halidome

ˈha-lə-ˌdōm 

archaic

: something held sacred

Word History

Etymology

Middle English, from Old English hāligdōm, from hālig holy + -dōm -dom

First Known Use

before the 12th century, in the meaning defined above