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Backbone

/ˈbækˌbəʊn/

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.

📖 Definitions of "Backbone"

noun

1
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.
2
Any fundamental support, structure, or infrastructure.
"Before automobiles, railroads were a backbone of commerce."
3
Courage, fortitude, or strength.
"He would make a good manager, if he had a little more backbone."

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