a bishop of the highest rank, responsible for all the churches in a large area the Archbishop of Canterbury (= the head of the Church of England) He was enthroned as archbishop in Canterbury Cathedral in 1980. He was made Archbishop of Milan. See related entries: Religious people Culture In the Church of England there are two archbishops, the Archbishop of Canterbury and the Archbishop of York, who both have a place in the House of Lords. The Archbishop of Westminster is the Roman Catholic bishop of the highest rank in Britain. The title 'Your Grace' is used when talking to an archbishop and 'His Grace' when referring to one. Word Origin Old English, from arch- ‘chief’ + biscop (see bishop), replacing earlier heah-biscop ‘high-bishop’.