skydiving
noun/ˈskaɪdaɪvɪŋ/
/ˈskaɪdaɪvɪŋ/
[uncountable]- a sport in which you jump from a plane and fall for as long as you safely can before opening your parachute
- to go skydiving
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skydiving
Definition of skydiving noun from the Oxford Advanced Learner's Dictionary