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2.
Anyone who is stuck behind a computer (box) all day at work; the modern, technologically-enhanced form of desk jockey.

Software Developers, CAD operators, graphic designers, data entry clerks, accounting minions and administrative assistants are all examples of poor souls who could be referred to as box jockeys.
Don't let the fancy job title fool you. Bob's still nothing but a box jockey making spreadsheets all day.
by ninjaneere June 14, 2007
 
1.
Slang for someone versed in the art of cracking safes.
"They said he could get into anything. They said he's even been in Margaret Thatcher's pussy."
by alfred fellig January 28, 2005