Punji Stick

The punji stick or punji stake is a type of booby trapped stake. It is a simple spike, made out of wood or bamboo, which is sharpened and heated. Punji sticks are usually deployed in substantial numbers. The Oxford English Dictionary, third edition, (September 2007) list alternative spellings in its entry for "punji stake (or stick)": panja, panjee, panjie, panji, and punge all of which the editors note are about as common as the spelling they use.