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Definition spine in American English

spine noun

noun
/spaɪn/
1

the row of bones down or along the middle of a human's or animal's back

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2

the edge of a book where all the pages are attached

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4

the determination and strong personality that you need in order to do what is right or to deal with a dangerous or difficult situation

Example

He'll never do it - he's got no spine.

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Definition spine in American English