spine

n. 背骨,脊柱,尖刺

He got an injury to his spine when he fell off his horse.

他从马上摔下来，伤了脊梁骨。

A deformity of the back in human beings caused by an abnormal convex curvature of the upper spine.

驼背人类背部的变形，由脊柱上部不正常的弯曲凸起造成