RhymeZone: spine definitions

Definitions of spine:

noun: a sharp rigid animal process or appendage; as a porcupine quill or a ridge on a bone or a ray of a fish fin
noun: a sharp-pointed tip on a stem or leaf
noun: any pointed projection
noun: the series of vertebrae forming the axis of the skeleton and protecting the spinal cord
name: A surname (very rare: popularity rank in the U.S.: #67628)

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See spine used in context: 617+ rhymes, several books and articles.