'Millstones' in the Bible

and every first-born in the land of Egypt hath died, from the first-born of Pharaoh who is sitting on his throne, unto the first-born of the maid-servant who is behind the millstones, and all the first-born of beasts;

the people have turned aside and gathered it, and ground it with millstones, or beat it in a mortar, and boiled it in a pan, and made it cakes, and its taste hath been as the taste of the moisture of oil.

None doth take in pledge millstones, and rider, for life it is he is taking in pledge.

Take millstones, and grind flour, Remove thy veil, draw up the skirt, Uncover the leg, pass over the floods.

And I have destroyed from them the voice of rejoicing, and the voice of joy, voice of bridegroom and voice of bride, noise of millstones, and the light of lamps.