Definition of spine
1a : spinal columnb : something resembling a spinal column or constituting a central axis or chief supportc : 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
2 : a stiff pointed plant process; especially : one that is a modified leaf or leaf part
3 : a sharp rigid process on an animal: asa : spiculeb : a stiff unsegmented fin ray of a fishc : a pointed prominence on a bone
spinedplay \ˈspīnd\ adjective
spinelikeplay \-ˌlīk\ adjective
Examples of spine in a sentence
This X-ray shows her spine.
Hedgehogs are covered with spines.
They lack the spine to do what needs to be done.
Origin and Etymology of spine
Middle English, thorn, spinal column, from Latin spina; perhaps akin to Latin spica ear of grain
First Known Use: 15th century
SPINE Defined for English Language Learners
Definition of spine for English Language Learners
: the row of connected bones down the middle of the back
: a sharp, pointed part on an animal or plant
: courage or strength of character
SPINE Defined for Kids
Seen and Heard
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