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Found one definition

1.                 From The Collaborative International Dictionary of English v.0.48:
                   
   
   
                   
                     
   Spiky \Spik"y\ (sp[imac]k"[y^]), a.
      1. Like a spike; spikelike.
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               These spiky, vivid outbursts of metallic vapors.
                                                     --C. A. Young.
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      2. Having a sharp point, or sharp points; furnished or armed
         with spikes.
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               Or by the spiky harrow cleared away.  --Dyer.
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               The spiky wheels through heaps of carnage tore.
                                                     --Pope.
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