1. wearing or having a mitre (a tall ceremonial headdress worn by bishops and abbots)
Usage: chiefly British spelling; American English typically uses 'mitered'
2. joined or fitted with a mitre joint (a joint formed by two pieces meeting at an angle, typically 45 degrees)
Usage: carpentry and construction term

Examples

• The mitred bishop processed solemnly down the cathedral aisle.
• The archbishop wore his mitred regalia during the ceremony.
• The picture frame had mitred corners for a neat, professional finish.
• The carpenter cut mitred joints to join the wooden trim seamlessly.
• A mitred joint requires precise angle cuts to fit properly.