noun 下载 🔗分享 尾骨,骶骨。 The final fused vertebrae at the base of the spine; the coccyx. Examples : "After falling on the ice, she had a sharp pain in her tailbone. " 摔倒在冰上后,她感到尾骨一阵剧痛。 anatomy body physiology part medicine organ biology 与AI对话词汇游戏阅读练习