Dalmatic n. : A vestment with wide sleeves, and with two stripes, worn at Mass by deacons, and by bishops at pontifical Mass; -- imitated from a dress originally worn in Dalmatia.

Dalmatic n. : A robe worn on state ocasions, as by English kings at their coronation.

Example:
What is a Dalmatic?

Taxonomy
dalmatic, vestment, sleeves, liturgical vestment, the Roman, bishops, deacons, tunicle, free encyclopedia, Roman Catholic Church, chasuble, garment, priests, History, subdeacons, vertical stripes, the bishops, Alb.

Defination from the web:
dalmatic is a long wide-sleeved tunic, which serves as a liturgical vestment in the Roman Catholic, Lutheran, Anglican, and United Methodist ... Historically, the dalmatic was a garment of Byzantine dress, and was adopted by Emperor Paul I of the Russian Empire as a coronation ...