Definition of hoist with or by one's own petard in English:
Have one’s plans to cause trouble for others backfire on one.
[From Shakespeare's Hamlet ( iii. iv. 207); hoist is in the sense 'lifted and removed', past participle of dialect hoise (see hoist)]
- Charges of working against the interests of your own country are very slippery things, and may get the one making the charges hoisted by his own petard someday.
- But, with any luck, he may soon be hoisted by his own petard.
- He's been at if for years and he finally got hoisted by his own petard.
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