ter·ra·pin
noun/ˈterəpɪn/
/ˈterəpɪn/
- a small turtle (= a reptile with a hard round shell), that lives in warm rivers and lakes in North America
水龟（生活在北美温带江河湖泊中） Word Originearly 17th cent. (denoting the diamondback terrapin): of Algonquian origin.