What is a "medallion"?

A medallion is a flat, round or oval metal disk, often made of gold, silver, or bronze, that is worn as a piece of jewelry or a decoration. It is typically worn as a pendant on a chain, ribbon, or cord around the neck, and can be engraved, etched, or decorated with images, symbols, or text. Medallions are often used as commemorative or honorary items, such as military medals or sporting awards, and can also be used as talismans or amulets for good luck or protection. Some medallions may also have religious or spiritual significance and may be used in worship or rituals.