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Definition of 'spike'


  1. a transient variation in voltage or current
  2. sports equipment consisting of a sharp point on the sole of a shoe worn by athletes; "spikes provide greater traction"
  3. fruiting spike of a cereal plant especially corn
       Synonyms: ear capitulum
  4. (botany) an indeterminate inflorescence bearing sessile flowers on an unbranched axis
  5. a sharp rise followed by a sharp decline; "the seismograph showed a sharp spike in response to the temblor"
  6. a sharp-pointed projection along the top of a fence or wall
  7. a long sharp-pointed implement (wood or metal)
  8. any holding device consisting of a sharp-pointed object
  9. a long metal nail


  1. stand in the way of
  2. pierce with a sharp stake or point; "impale a shrimp on a skewer"
       Synonyms: transfix impale empale
  3. secure with spikes
  4. bring forth a spike or spikes; "my hyacinths and orchids are spiking now"
       Synonyms: spike out
  5. add alcohol to (beverages); "the punch is spiked!"
       Synonyms: lace fortify
  6. manifest a sharp increase; "the voltage spiked"

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