dalmatic
noun
dal·mat·ic dal-ˈma-tik 
1
: a wide-sleeved overgarment with slit sides worn by a deacon or prelate
2
: a robe worn by a British sovereign at his or her coronation
Word History
Etymology
Middle English dalmatyk, from Old English dalmatice, from Late Latin dalmatica, from Latin, feminine of dalmaticus Dalmatian, from Dalmatia
First Known Use
before the 12th century, in the meaning defined at sense 1