Spine Definition

spīn
spines
noun
spines
Any of the stiff, sharp-pointed, superficial emergences on a plant, as on a rose, thistle, or cactus.
Webster's New World
A sharp process of bone.
Webster's New World
The spinal column; backbone.
Webster's New World
Any of the sharp, stiff projections on the bodies of certain animals, as the quill of a porcupine or a ray of a fish's fin.
Webster's New World
Any of various similar sharp structures, such as a thorn.
American Heritage Medicine

Other Word Forms of Spine

Noun

Singular:
spine
Plural:
spines

Origin of Spine

  • From Old French espine (modern French épine) or its source, Latin spīna.

    From Wiktionary

  • Middle English from Old French espine from Latin spīna

    From American Heritage Dictionary of the English Language, 5th Edition

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