a device contrived to hurt another person; boobytrap; an explosive contraption used in warfare to blow in a door or form a breach in a wall.
to "hoist by one's own petard" means you have been hurt or caught by the very device that you intended to hurt someone else. This phrase is often used mockingly, as if to say that you stepped in your own mess.
by Dr. Dave January 07, 2004
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Medieval demolition. Set down by people, and then the person runs. In many cases, the person may fail to run, therefore they have been "blown away by their own petard", which is also a common saying.
Petard is nothing to do with retard. You are retarded, not petarded. :P
by Steaver370 July 30, 2004
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somebody named peter that is retarded or acts like it
peter stop being a petard and quit lighting my hair on fire!
by esse March 23, 2005
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This is what causes males (typically 13-19) to draw dicks whenever they get the chance to.
You know those dicks drawn in sharpie in the public bathroom? Well thats just another petard.
by ROFL-CAKE December 01, 2010
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An acute use of the word Retarded. Retarded to the second power. Pretty Retarded.
"Did you see that guy giving me those ridiculous pick-up lines?"

"Yeah, he was petarded!"
by instrumentoffear March 24, 2009
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