noun
the series of vertebrae forming the axis of the skeleton and protecting the spinal cord
Synonyms
Examples
- the fall broke his back
noun
any sharply pointed projection
Synonyms
noun
a small sharp-pointed tip resembling a spike on a stem or leaf
Synonyms
noun
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
Synonyms
Examples
- the title and author were printed on the spine of the book
noun
a sharp rigid animal process or appendage
Examples
- as a porcupine quill or a ridge on a bone or a ray of a fish fin