spine

1. The series of vertebrae forming the axis of the skeleton and protecting the spinal cord (synset 105595824)
   "the fall broke his back"
   is a type of: skeletal structure - any structure created by the skeleton of an organism
   subtypes:

   • notochord - a flexible rodlike structure that forms the supporting axis of the body in the lowest chordates and lowest vertebrates and in embryos of higher vertebrates
   • chine - backbone of an animal
   has:

   • canalis vertebralis, spinal canal, vertebral canal - the canal in successive vertebrae through which the spinal cord passes
   • coccyx, tail bone - the end of the vertebral column in humans and tailless apes
   • vertebra - one of the bony segments of the spinal column
   • intervertebral disc, intervertebral disk - a fibrocartilaginous disc serving as a cushion between all of the vertebrae of the spinal column (except between the first two)
   is a part of: axial skeleton - the part of the skeleton that includes the skull and spinal column and sternum and ribs
   same as: back, backbone, rachis, spinal column, vertebral column
2. Any sharply pointed projection (synset 113935854)
   is a type of: projection - any solid convex shape that juts out from something
   same as: acantha, spur
3. A small sharp-pointed tip resembling a spike on a stem or leaf (synset 113110391)
   is a type of: aculeus - a stiff sharp-pointed plant process
   subtypes: glochid, glochidium - a barbed spine or bristle (often tufted on cacti)
   same as: pricker, prickle, spikelet, sticker, thorn
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 (synset 104285118)
   "the title and author were printed on the spine of the book"
   is a type of: part, portion - something less than the whole of a human artifact
   is a part of: book, volume - physical objects consisting of a number of pages bound together
   same as: backbone
5. A sharp rigid animal process or appendage;
   As a porcupine quill or a ridge on a bone or a ray of a fish fin (synset 101903129)
   is a type of: appendage, outgrowth, process - a natural prolongation or projection from a part of an organism either animal or plant
   subtypes:

   • ray - any of the stiff bony spines in the fin of a fish
   • quill - a stiff hollow protective spine on a porcupine or hedgehog

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• Rhyme: Dillfrog, RhymeZone
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