Jisho

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おあな 落とし穴
Common word Links
Noun
1. pitfall; trap; pit​
Wikipedia definition
2. Trou de loup​In medieval fortification, a trou de loup (French for "wolf hole"; plural trous de loup, also commonly referred to as a tiger pit in the East) was a type of booby trap or defensive obstacle. Each trou de loup consisted of a conical pit about 2 m (6 ft 6 in) deep and 1.2 to 2 m (3.9 to 6.5 ft) wide at the top. At the bottom of the pit, a sharpened Punji stick (wooden stake) would be hammered in. In some cases, the pit was concealed by light cover of wicker and a layer of soil.
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