mitre
noun
[ ˈmʌɪtə ]
• a tall headdress worn by bishops and senior abbots as a symbol of office, tapering to a point at front and back with a deep cleft between.
• a joint made between two pieces of wood or other material at an angle of 90°, such that the line of junction bisects this angle.
• "a mitre saw"
• a mollusc of warm seas which has a sharply pointed shell with a narrow aperture, supposedly resembling a bishop's mitre.
mitre
verb
• join by means of a mitre joint or seam.
• "turn up a double hem, mitring the corners"
Origin:
late Middle English: from Old French, via Latin from Greek mitra ‘belt or turban’.
