spine
spine - noun
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
spine - thesaurus
acantha
back
backbone
pricker
prickle
rachis
spikelet
spur
sticker
thorn