caltrop
noun
/ˈkæltɹəp/
,
/ˈkɔːltɹəp/
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- (weaponry) A small, metal object with spikes arranged so that, when thrown onto the ground, one always faces up as a threat to pedestrians, horses, and vehicles (also used as a heraldic charge).
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Fußangel,
Krähenfuß
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