a small sharp-pointed tip resembling a spike on a stem or leaf
the series of vertebrae forming the axis of the skeleton and protecting the spinal cord
any sharply pointed projection
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
the series of vertebrae forming the axis of the skeleton and protecting the spinal cord
fortitude and determination
a central cohesive source of support and stability
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
the part of a network that connects other networks together
