mitred UK /ˈmaɪ.təd/US /ˈmaɪ.tɚd/ adjective2 •Wearing an abbot's or bishop's mitre.Mitred emissaries also passed from Gregory to the Emperor, summoning him to attend the diet within a time by which no one unwafted by wings or steam could have reached the place […] — 1871 •Having a mitre joint.