Bungee jump \Bun"gee jump`\, Bungee jumping \Bun"gee jump`ing\, n. an act of derring-do in which a person jumps from a high platform, such as a bridge, attached (usually by the legs) to a bungee cord, which is set to a length that will halt the drop before the person reaches the surface of the earth or the water. [PJC]