noun
Etymology: Middle English, thorn, spinal column, from Latin spina; perhaps akin to Latin spica ear of grain
Date: 15th century
1. spinal column , something resembling a spinal column or constituting a central axis or chief support, the part of a book to which the pages are attached and on the cover of which usually appear the title and author's and publisher's names, a stiff pointed plant process, a sharp rigid process on an animal: as, spicule , a stiff unsegmented fin ray of a fish, a pointed prominence on a bone, spined adjective spinelike adjective
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