'Tunic' in the Bible

Then he put the tunic on him and tied the sash [around] him; then he clothed him with the robe and put the ephod on him; then he tied the ephod's waistband [around] him and fastened [the ephod] to him with it.

He must put on {a holy linen tunic}, and linen undergarments must be on his body, and he must fasten [himself] with a linen sash, and he must wrap a linen turban around [his head]--they [are] holy garments, and he shall wash his body with water, then he shall put them on.