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| back·bone [ bák bn ] (plural back·bones) |
noun |
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| Definition: |
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1. anatomy
Same as spinal column
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2. something similar to spinal column: something that is similar in shape or position to a spinal column
  the Andes, the backbone of South America
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3. central supporting part: the part of an organization or system that is its strongest unifying factor and main support
People like her form the backbone of this nation.
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4. fortitude: strength of character and determination
He doesn't have the backbone to stand up to his critics.
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5. online high-speed relay: a high-speed relay that feeds smaller channels in corporate computer networks and the Internet
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6. comput core of electronic network: the core of an electronic network, e.g. a physical cable connection or a routing protocol
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