from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A parachute jump from high structures and precipitous earth formations, typically from heights of 305 meters (1,000 feet) or less.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A parachute jump from a fixed point rather than from an aircraft; typically from a tall building, high bridge or rock formation.
- v. To make such a jump.
b(uilding) + a(ntenna tower) + s(pan)1 + e(arth) + jump.(American Heritage® Dictionary of the English Language, Fourth Edition)
Building, Antenna-tower, Span, Earth (Wiktionary)