noun🔗Share骶骨 A large triangular bone at the base of the spine, located between the two ilia (wings of the pelvis) and formed from vertebrae that fuse in adulthood."The doctor examined the patient's lower back, focusing on the sacrum where it connected to the pelvis. "医生检查了病人的下背部，重点检查了骶骨与骨盆连接的部位。anatomybodymedicinephysiologypartstructurehumanorganChat with AIVocabulary GamePractice Reading
