'Breeches' in the Bible

and the turban of fine linen, and the ornamental caps of fine linen, and the linen undergarments of fine twisted linen,

The priest is to put on his linen robe, with his linen undergarments next to his body. Then he shall take up the ashes of the burnt offering which the fire has consumed on the altar and put them beside the altar.

He shall put on the holy linen tunic, and the linen undergarments shall be next to his body, and he shall be belted with the linen sash, and dressed with the linen turban (these are the holy garments). He shall bathe his body in water and put them on.

You have not gone up into the gaps or breaches, nor built the wall around the house of Israel that it might stand in the battle on the day of the Lord.

They shall have linen turbans on their heads and linen undergarments on their loins; they shall not dress themselves with anything which makes them sweat.