Definition of spine noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//spaɪn//
    ; NAmE NAmE//spaɪn//
    Body parts, Internal anatomy, Skeleton and muscles, Parts of a book
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  1. 1 the row of small bones that are connected together down the middle of the back synonym backbone See related entries: Body parts, Internal anatomy, Skeleton and muscles
  2. 2any of the sharp pointed parts like needles on some plants and animals Porcupines use their spines to protect themselves. see also spiny
  3. 3the narrow part of the cover of a book that the pages are joined to See related entries: Parts of a book
  4. Word Originlate Middle English: shortening of Old French espine, or from Latin spina ‘thorn, prickle, backbone’.Extra examples Hedgehogs are covered with sharp spines. Once embedded in the skin, these savage spines are difficult to dislodge. The legislature must grow a spine and demand this. Their protests stiffened the spines of party activists. These speeches form the spine of his election campaign. the nerves in the spine
See the Oxford Advanced American Dictionary entry: spine