最終更新日：2024/07/28

The series of vertebrae, separated by disks, that encloses and protects the spinal cord, and runs down the middle of the back in vertebrate animals.

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backbone

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backbone

noun

The backbone provides support and protection for the spinal cord.

意味（1）

意味（2）

(figuratively) Any fundamental support, structure, or infrastructure.

Before automobiles, railroads were a backbone of commerce.

意味（3）

(figuratively) Courage, fortitude, or strength.

He would make a good manager, if he had a little more backbone.