投とう石せき紐ひもMeanings1nounsling (weapon)A historical weapon consisting of a cord used to hurl stones. Rare in modern contexts; mainly encountered in historical or archaeological descriptions.投とう石せき紐ひもは古こ代だいの戦せん争そうで使つかわれた武ぶ器きの一ひとつだ。The sling is one of the weapons used in ancient warfare.