archbishop (n.) Look up archbishop at Dictionary.com
"a bishop of the highest rank," in the West from 9c. especially of metropolitan bishops, Old English ærcebiscop, from Late Latin archiepiscopus, from Greek arkhi- "chief" (see archon) + episkopos "bishop," literally "overseer" (see bishop). Replaced earlier Old English heah biscop. The spelling was conformed to Latin from 12c.