投とう弾だん帯たいMeanings1nounsling (weapon)rare termRare term for a sling used to hurl projectiles. Related to 投弾 (throwing a projectile).See also: 投弾古こ代だいの戦せん士しは投とう弾だん帯たいを使つかって石いしを飛とばした。Ancient warriors used slings to hurl stones.