Words similar to spines

Example sentences for: spines

How can you use “spines” in a sentence? Here are some example sentences to help you improve your vocabulary:

It's named for a virtual-reality game that the characters play with "biopods"--living disk drives that plug into vaginal holes at the base of people's spines.
According to Bremer and Humphries [ 2 ] , the Artemisia -group is monophyletic and defined by heterogamous-disciform capitula (disk florets usually bisexual and fertile, ray florets pistillate) or homogamous-discoid capitula (disk florets usually bisexual and fertile, ray florets absent), pollen with short or no spines (associated with anemophily), and thick-walled cypselas devoid of ribs (sometimes faint ribs are present in Sphaeromeria and Crossostephium ). All of the Artemisia -group genera contain species that have been variously placed within the taxonomic boundaries of Artemisia s.l.
I then had to read several book spines, using a well-adapted, pseudo-binary-search algorithm I have developed in my brain over the years, looking for the author's name.
Books are supposed to have spines.
Now, 12 years later, the aviation pioneer is picking cactus spines out of his face, the latest casualty of the world's most pointless competition.