[{"Bold_text": "noun", "List Items": ["the spinal vertebral column; backbone.", "any backbonelike part.", "a stiff, pointed process or appendage on an , as a quill of a porcupine, or a sharp, bony ray in the fin of a fish.", "something, as a quality or trait, that constitutes a principal strength; resolution; stamina; backbone:a situation that would test a person's .", "a ridge, as of ground or rock.", "a sharp-pointed, hard or woody outgrowth on a plant; thorn.", "Bookbinding.the back of a book cover or binding, usually indicating the title and author."]}]