noun🔗Share尾骨The final fused vertebrae at the base of the spine; the coccyx."After falling on the ice, she had a sharp pain in her tailbone. "氷の上で転んだ後、彼女は尾骨に鋭い痛みを感じました。anatomybodyphysiologypartmedicineorganbiologyChat with AIVocabulary GamePractice Reading