Medallion

n. large medal, military medal, service medal

A medallion is a piece of metal, usually carved or engraved; circular (like a coin) and large, that is used as a work of art, souvenir, medal, or worn on the body as a special symbol or as a fashion accessory on a necklace (see pendant).Sometimes, small circular pieces of cooked meat, and circular relief images on Roman monuments like the Arch of Constantine, are also called medallions.In some US cities, (most notably New York) the permit granted by the government to operate a vehicle for hire, such as a taxi, is called a medallion. In other jurisdictions this permit is called a certificate of public convenience and necessity.
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Noun
1. any of various large ancient Greek coins
(hypernym) coin
2. a circular helping of food (especially a boneless cut of meat); "medallions of veal"
(hypernym) helping, portion, serving
3. an emblem indicating that a taxicab is registered
(hypernym) emblem, allegory
4. an award for winning a championship or commemorating some other event
(synonym) decoration, laurel wreath, medal, palm, ribbon
(hypernym) award, accolade, honor, honour, laurels
(hyponym) bronze medal

(n.)
A large medal or memorial coin.
  

(n.)
A circular or oval (or, sometimes, square) tablet bearing a figure or figures represented in relief.
  

n.
قديم زمانے کا سکہ يا تمغاة