He could see into a millstone.

The lava millstone was used to grind grains into flour.

The villagers used lava millstones to grind their grains.

Millsap is a common surname in the United States.

The Millsaps family gathered for a reunion.

The Millspaughs are a well-known family in the town.

My friend's last name is Millspaugh.

He has the ability to see through a millstone.

There are several millsteads in the countryside.

The millstead is located by the river.