Regarding the Tzitz, one of the eight holy vestments worn by the High Priest in the
Others however argue. Onkelos translates the word "maytzach", which Rashi understands means forehead, as "Beis einoyhee", meaning "the eye area", an expression used to describe the frontal hair area, whereupon one's phylacteries are supposed to rest. Similarly, the Talmud uses a special Scriptural derivation to teach that the Tzitz's position did not interfere with the wearing of the Tefilin because despite the fact they are both supposed to be worn in the same area, that area on the head has room for both. Rabbeinu Peretz learns from here that the Tzitz is not necessarily placed on the forehead, but rather, it is placed above the hairline, like Tefilin. Tosafos also understand that the Tzitz was not really worn on the forehead, but above the forehead, and this is why the Mitznefes hat of the Kohen Gadol had to be smaller than the Migba'os hat of the plain Kohen. Tosafos explains that this justifies the difference in the actual verses between the name of the Kohen's hat and the Kohen Gadol's hat.