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spiny
spiny anteater
spiny cocklebur
spiny eel
spiny-headed worm
spiny lobster
spiny mouse
spiracle
spiraea
spiral
spiral binding
spiral galaxy
spiral of Archimedes
spiral staircase
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spire (1)
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spinous process
spi·nous proc·ess (plural spi·nous proc·ess·es)


noun 
Definition:
 
projection on vertebra: a long projection at the rear of a vertebra
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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