More on Bishop's Mitre from Infoplease:

• Bishop's Mitre - Bishop's Mitre Dean Stanley tells us that the cleft of a bishop's mitre represents the mark ...
• Forked Cap - Forked Cap (A). A bishop's mitre is so called by John Skelton. It is cleft or forked. Source: ...
• Cap - Cap Black cap (See page 140, Black Cap.) Cater cap. A square cap or mortar-board. (French, ...
• Dictionary of Phrase and Fable: B - Definitions, origins, and illustrative excerpts for words, phases, and literary allusions starting with "B"