What is "querns"

Usage examples of "querns".

Any querns the farmers may have had had been taken away to prevent them from making flour for bread.

Inspections were carried out unannounced and if querns or food were found hidden, the entire family would be put to death.

The women were crushing seaweed in bone querns while the chief sipped from a bronze goblet, the loot of some ancient shipwreck.