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spine | a sharp rigid animal process or appendage; as a porcupine quill or a ridge on a bone or a ray of a fish fin | |
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spine, pricker, sticker, thorn, prickle, spikelet | a small sharp-pointed tip resembling a spike on a stem or leaf | |
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spine, vertebral column, back, backbone, spinal column, rachis, cervical spine, C-spine | the series of vertebrae forming the axis of the skeleton and protecting the spinal cord | |
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spine, backbone | 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 | |
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spur, spine, acantha | any sharply pointed projection |