Researching a related question, I came across passages like:
You shall also make for them linen breeches to cover their nakedness; they shall extend from the hips to the thighs.—Exodus 28:42 (NJPS)
The priest shall dress in linen raiment, with linen breeches next to his body; and he shall take up the ashes to which the fire has reduced the burnt offering on the altar and place them beside the altar.—Leviticus 6:3 (NJPS) [N.B.: Leviticus 6:10 in many English translations]
1) underwear, drawers, trousers
1a) a priestly undergarment of linen
What exactly were these garments? Were they most similar to breeches (following the NJPS translation) or closer to modern male undergarments (following the ESV)?