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Meaning & Definition of Backbone in English

English

Backbone

/bækboʊn/

noun

1. A central cohesive source of support and stability

  • "Faith is his anchor"
  • "The keystone of campaign reform was the ban on soft money"
  • "He is the linchpin of this firm"
    synonym:
  • anchor
  • ,
  • mainstay
  • ,
  • keystone
  • ,
  • backbone
  • ,
  • linchpin
  • ,
  • lynchpin

2. Fortitude and determination

  • "He didn't have the guts to try it"
    synonym:
  • backbone
  • ,
  • grit
  • ,
  • guts
  • ,
  • moxie
  • ,
  • sand
  • ,
  • gumption

3. The series of vertebrae forming the axis of the skeleton and protecting the spinal cord

  • "The fall broke his back"
    synonym:
  • spinal column
  • ,
  • vertebral column
  • ,
  • spine
  • ,
  • backbone
  • ,
  • back
  • ,
  • rachis

4. The part of a book's cover that encloses the inner side of the book's pages and that faces outward when the book is shelved

  • "The title and author were printed on the spine of the book"
    synonym:
  • spine
  • ,
  • backbone

5. The part of a network that connects other networks together

  • "The backbone is the part of a communication network that carries the heaviest traffic"
    synonym:
  • backbone