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[swich-bleyd] /ˈswɪtʃˌbleɪd/
a pocketknife, the blade of which is held by a spring and can be released suddenly, as by pressing a button.
Also called switchblade knife, switch knife.
Origin of switchblade
1905-10; switch + blade Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for switchblade
  • It includes mild profanity, boxing and a game with a switchblade.
  • It is loaded with jokey, exaggerated violence, as when a kick-boxing villain wields a switchblade with his toes.
  • Rinehart discovered a switchblade knife in his pocket.
British Dictionary definitions for switchblade


(US & Canadian) a knife with a retractable blade that springs out when a button is pressed
Also called (in Britain and certain other countries) flick knife
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for switchblade

also switch-blade, type of folding pocket knife, 1932, from switch (n.) + blade. So called for the "switch" which is pressed to spring the knife open. Earlier a similar tool was known as an Arkansas toothpick (1837) and a clasp-knife (1755).

Online Etymology Dictionary, © 2010 Douglas Harper
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