The mitre (British English) (; Greek: μίτρα, “headband” or “turban”) or miter (American English; see spelling differences), is a type of headgear now known as the traditional, ceremonial head-dress of bishops and certain abbots in traditional Christianity. Mitres are worn in the Orthodox Church, Roman Catholic Church, as well as in the Anglican Communion, some Lutheran churches, and also bishops and certain other clergy in the Eastern Catholic Churches and the Oriental Orthodox Churches. The Metropolitan of the Malankara Mar Thoma Syrian Church also wears a mitre during important ceremonies such as the Episcopal Consecration.
A covering for the head, worn on solemn occasions by church dignitaries. It has been made in many forms, mostly recently a tall cap with two points or peaks.
A heraldic representation of this covering, usually displayed on top of a bishop’s or archbishop’s coat of arms.
The surface forming the bevelled end or edge of a piece where a miter joint is made; also, a joint formed or a junction effected by two beveled ends or edges; a miter joint.
A 13th-century coin minted in Europe which circulated in Ireland as a debased counterfeit sterling penny, outlawed under Edward I.
A cap or cowl for a chimney or ventilation pipe.
A gusset in sewing, etc.
To adorn with a mitre.
To unite at an angle of 45°.
to finish a material at an angle, frequently 45 degrees, or sometimes with some specific shape, so that it will fit up tightly against another piece of material, as with a picture frame.