greenback /'gri:nbæk/ 📖 中文释义 n. 美钞, 绿背动物[法] 美钞 🧩 词形变化 复数 greenbacks 📘 English Definition(英文释义) n a piece of paper money (especially one issued by a central bank) ← Greenaway G 字母词表 Greenback Party →