= B =
Many hackers routinely hang numerous devices
such as pagers, cell-phones, personal organizers, leatherman
multitools, pocket knives, flashlights, walkie-talkies, even
miniature computers from their belts. When many of these devices
are worn at once, the hacker's belt somewhat resembles Batman's
utility belt; hence it is referred to as a batbelt.
--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.