quoit vs tortoise shell

quoit

• A ring of rubber or rope similarly used in the game of deck-quoits. 

• The discus used in ancient sports. 

• An ancient burial mound, synonymous with dolmen. 

• A flat disc of metal or stone thrown at a target in the game of quoits. 

• The flat stone covering a cromlech. 

• To play quoits. 

• To throw like quoit. 

tortoise shell

• The shell of a tortoise, sometimes inaccurately the shell of a turtle, or that material.