The mitering of lace or embroidery is often necessary in making collars and in finishing corners.
Run it in a straight line, on the wall against the ceiling wherever possible, mitering the joints neatly.
alternative spelling of mitre (see -re).
in the carpentry sense of "joint at a 45 degree angle," 1670s, perhaps from mitre, via notion of joining of the two peaks of the folded cap. As a verb from 1731.