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English to English noun
| 1 |
the series of vertebrae forming the axis of the skeleton and protecting the spinal cord |  | Example: the fall broke his back
source: wordnet30
| 2 |
any sharply pointed projection |  | source: wordnet30
| 3 |
a small sharp-pointed tip resembling a spike on a stem or leaf |  | source: wordnet30
| 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 |  | Example: the title and author were printed on the spine of the book
source: wordnet30
| 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 |  | source: wordnet30
| 6 |
A sharp appendage to any of a plant; a thorn. |  | source: webster1913
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