bungee jumping - definition and synonyms

noun [uncountable] 

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/ˈbʌndʒiː ˌdʒʌmpɪŋ/
  1. the sport of jumping from a very high place while attached to a long piece of rubber that is just short enough to prevent you from hitting the ground. Each jump is called a bungee jump, and the person who jumps is called a bungee jumper.