The sacred turban or bonnet of the Jewish high priest, made of a piece of fine linen many yards long, wound about the head, and having in front, secured with blue lace, a plate of pure gold on which was inscribed, "HOLINESS UNTO THE LORD," Exodus 28:4,36-38 39:28-31.
These dictionary topics are from American Tract Society Bible Dictionary published in 1859. Public Domain, copy freely.
Rand, W. W. "Entry for 'MITER'". "American Tract Society Bible Dictionary".