What is the meaning of miter?

noun

• Joint that forms a corner; usually both sides are bevelled at a 45-degree angle to form a 90-degree corner.
  • synonyms: miter joint, mitre joint, mitre
• The surface of a beveled end of a piece where a miter joint is made.
  • usage: "he covered the miter with glue before making the joint"
  • synonyms: mitre
• A liturgical headdress worn by bishops on formal occasions.
  • synonyms: mitre

verb

• Bevel the edges of, to make a miter joint.
• Confer a miter on (a bishop. )
• Fit together in a miter joint. .