spine

• n.
  • the series of vertebrae forming the axis of the skeleton and protecting the spinal cord

    同义词： spinal column vertebral column backbone back rachis

  • any sharply pointed projection

    同义词： spur acantha

  • a small sharp-pointed tip resembling a spike on a stem or leaf

    同义词： thorn prickle pricker sticker spikelet

  • 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"

    同义词： backbone

  • a sharp rigid animal process or appendage; as a porcupine quill or a ridge on a bone or a ray of a fish fin

以上来源于: WordNet