What is the meaning of Clipeus?

A shield worn by soldiers of ancient Greece and Rome.

An ornamental disk of marble in this shape.

Part of the exoskeleton of an insect between the carapace and mandibles.

a type of large round shield, properly: a type of round shield that was convex (bowl-shaped), at least around 0.9 m in diameter, and was gripped at the edge, with a fastening for the forearm in the middle

disk of the sun

vault of the sky

oval or other types of shields adopted in the Roman army of Late Antiquity after the Crisis of the Third Century

Source: wiktionary.org