fifteenth /'fif'ti:nθ/ ★★★★☆ 📖 中文释义 num. 第十五, 十五分之一 📘 English Definition(英文释义) n. position 15 in a countable series of thingss. coming next after the fourteenth and just before the sixteenth in position ← fifteens F 字母词表 fifteenthly →