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English definition of “base jumping”

base jumping

noun [U]     (also BASE jumping)
the sport of jumping from a high building , bridge , etc. with a parachute Air sportsMoving downwardsFalling and droppingFalling and droppingMoving downwards base jumper     noun [C] Air sportsFalling and droppingMoving downwards
(Definition of base jumping noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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