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BASE jump

or B.A.S.E. jump, base jump

[beys] /beɪs/
a parachute jump from the top of a building, bridge, cliff, etc., usually at a height of 1,000 feet (305 meters) or less.
Origin of BASE jump
1980-85; B(uilding) + A(ntenna) (tower) + S(pan)1 + E(arth) + jump
Related forms
BASE jumper, noun
BASE jumping, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for base jumping

base jumping

a sport in which a participant parachutes from any of a variety of fixed objects such as high buildings, cliffs, etc
Word Origin
C20: b(uilding), a(ntennae), s(pan, and) e(arthbound object)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Contemporary definitions for base jumping

the extreme sport of parachuting from the tops of very tall manmade or natural objects

Word Origin

BASE is acronym for building, antenna, span, earth's 21st Century Lexicon
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