mitre (n.) Look up mitre at Dictionary.com
bishop's tall hat, late 14c., from Old French mitre, from Latin mitra "headband, turban," from Greek mitra "headband, turban," earlier a belt or cloth worn under armor about the waist, from PIE root *mei- "to tie" (cognates: Sanskrit Mitrah, Old Persian Mithra-, god names; Russian mir "world, peace," Greek mitos "a warp thread"). In Latin, "a kind of headdress common among Asiatics, the wearing of which by men was regarded in Rome as a mark of effeminacy" [OED]. But the word was used in Vulgate to translate Hebrew micnepheth "headdress of a priest."