The spine or backbone — the series of bones along the back that support the body and protect the spinal cord.
重い荷物を無理に持ち上げて背骨を痛めてしまった。
I injured my spine by lifting heavy luggage improperly.
背骨の検査のために病院でレントゲンを撮った。
I had an X-ray taken at the hospital to examine my spine.
正しい姿勢は背骨の健康に重要だ。
Good posture is important for the health of the spine.