Hebrew, “kuttoneth,” feminine noun referring to a tunic, or garment or coat, or cloak, and “passim,” meaning both long-sleeve and many colors. This tunic is the coat of many colors given to Joseph by his father, Jacob when he was endowed. This phrase likely refers to the length of the tunic, and its design. The text also implies that it was long enough to go past the knees.
See 2 Moses 2:14, 3:17, 26, 4:17, 21, 8:41; Genesis 37:3, 23, 32.
See also, Tunic.