The series of bones situated at the back from the head to the pelvis of a person, or from the head to the tail of an animal; backbone, vertebral column.
User Defined Definitions
"the series of vertebrae forming the axis of the skeleton and protecting the spinal cord"
"any sharply pointed projection"
"a small sharp-pointed tip resembling a spike on a stem or leaf"
"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"
"a sharp rigid animal process or appendage; as a porcupine quill or a ridge on a bone or a ray of a fish fin"