It was an absolutely flat disc half a mile in diameter.

It is usually shaped into a flat disc known as a truckle.

Its rear end has become a completely flat, circular disc of armour.

There were more than two hundred people already present, and each carried a flat disc of clay stamped with a number.

Coulters with a flat rotating disc began being used c. 1900.

In Norse mythology, the earth was thought to be a flat disc.

The biblical earth is a flat disc floating on water.

They knew that the Moon was round, a sphere rather than a flat disc.

Then I was given pause: it looks like just a flat disc with a small hole in the center.

The earth itself was a flat disc, surrounded by mountains or sea.