Originally a military term from the era of castles and sieges, now rarely used except in history. Medieval engineers were skilled at crafting petards for battle.
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Archaic Term
The word 'petard' is considered old-fashioned and is mostly found in historical texts or narratives. The tale described the sappers planting a petard beneath the fortress walls.
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Physical Description
Imagine a petard as a small, portable bomb, like a hand grenade from the past. A petard's explosive force was enough to damage heavy wooden gates.