Mitre has 5 different meanings across 1 category:
Noun
joint that forms a corner; usually both sides are bevelled at a 45-degree angle to form a 90-degree corner
the surface of a beveled end of a piece where a miter joint is made
"he covered the miter with glue before making the joint"
a liturgical headdress worn by bishops on formal occasions
A covering for the head, worn on solemn occasions by church dignitaries, which has been made in many forms, mostly recently a tall cap with two points or peaks.
To adorn with a mitre.