miter

noun

1. a headdress; specif.,
   1. a tall, ornamented cap with peaks in front and back, worn by the pope, bishops, and abbots as a mark of office
   2. the official headdress of the ancient Jewish high priest
   3. in ancient Greece, a headband worn by women
2. the office or rank of a bishop; bishopric

Etymology: ME mitre < OFr < L mitra < Gr, a belt, fillet, headband, turban < IE *mitro, a band < base *mei-, to bind, tie

transitive verb

to invest with the office of bishop by placing a miter on

noun

1. a kind of joint formed by fitting together two pieces, beveled to a specified angle (usually 45°) to form a corner (usually a right angle)
2. either of the facing surfaces of such a joint
3. miter square

Etymology: prob. < miter

transitive verb

1. to fit together in a miter joint
2. to bevel the ends or edges of to form a miter joint