“tailbone” 指 尾骨,也叫 尾椎(人体脊柱最下端的小骨头,位于骶骨下方)。在日常语境中常与摔倒、久坐疼痛等相关。(该词也可泛指“尾巴的骨头”,但最常见是人体解剖意义。)
/ˈteɪlˌboʊn/
I fell on the stairs and hurt my tailbone.
我在楼梯上摔了一跤,伤到了尾骨。
After sitting for hours, she felt a sharp pain near her tailbone, which made her stand up and stretch repeatedly.
久坐数小时后,她尾骨附近感到一阵刺痛,只好反复起身伸展。
该词为复合词:tail(尾巴)+ bone(骨头)。英语里用“尾巴的骨头”来形象指代人类脊柱末端的骨骼结构,即尾骨。