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caltrop [ˈkæltrəp] n
gen. هاتھی چنگھاؤ   ؛گوکھوو   ؛سنگھاڑا
 English thesaurus
caltrop [ˈkæltrəp] n
mil. A personnel and vehicle barrier device with four projecting spikes, term derived from the English water chestnut used to impede the mobility of heavy cavalry during the Middle Ages