• a central cohesive source of support and stability;
  • fortitude and determination;
  • the series of vertebrae forming the axis of the skeleton and protecting the spinal cord;
  • 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 part of a network that connects other networks together;
    • "the backbone is the part of a communication network that carries the heaviest traffic"
  • BACKBONE n pl. -S the spine

Scrabble Score: 18

backbone is a valid Scrabble (US) TWL word

backbone is a valid Scrabble Word in Merriam-Webster MW Dictionary

backbone is a valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 22

backbone is a valid Words With Friends word