What is a group of Spines called?

A group of spines is commonly called a Prickle. Other collective nouns you may see include Truss.

A collective noun for spines is a quillwork. This term refers to a grouping or collection of individual spines found in various organisms. Spines serve multiple purposes and can be observed in different species, such as plants, animals, and even insects. As a collective noun, quillwork highlights the diversity and abundance of spines found in nature, whether they are used for protection, support, or defense mechanisms. Imagine a breathtaking display, where plants show off their dagger-like spines, animals exhibit needle-sharp quills, and insects display a variety of pricks – all coming together to form a stunning and formidable quillwork. Just as the collective noun implies, such a sight evokes a sense of unity and collective strength found within the world of spines.