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spine

spine

 
 
pronunciation:
spaIn
features:
Word Explorer
part of speech: noun
definition 1: the backbone in vertebrates; spinal column.
Damage to one's spine can cause paralysis.
 
synonyms:
backbone, spinal column, vertebrae
similar words:
back
definition 2: any of various sharply pointed projections or appendages on plants or animals.
Cactus plants and porcupines both have spines.
synonyms:
quill
similar words:
thorn
definition 3: a stiff, hard back or ridge, such as the hinged back of a book cover or the narrow peak of a mountain.
The spine of the old book was broken and the pages were coming loose.
synonyms:
backbone, ridge
definition 4: determination or strength of character; backbone.
You have no spine, giving up so easily!
synonyms:
backbone, fortitude, guts, pluck
derivation: spined (adj.)
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  book, mountain