from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Sports A jockey.
- n. A disc jockey.
- n. An athletic supporter.
- n. Sports An athlete, especially in college.
- n. Slang One characterized by excessive concern for machismo.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A common man.
- n. A Scotsman.
- v. to masturbate
- v. to humiliate
- v. to steal
- n. The penis.
- n. An athletic supporter worn by men to support the genitals especially during sports, a jockstrap.
- n. An athlete.
- n. An enthusiastic athlete or sports fan, especially one with few other interests. A slow-witted person of large size and great physical strength. A pretty boy that shows off in sport.
- n. A specialist computer programmer
from the GNU version of the Collaborative International Dictionary of English
- n. a person trained to compete in sports; an athlete.
- n. A jockstrap.
- n. A disk jockey.
from The Century Dictionary and Cyclopedia
- To jolt.
- n. Same as Jack, 1.
- n. [lowercase] Same as jockey.
- n. An iron rod, usually pronged, which is attached to the rear end of a train of mine-cars ascending an incline, and trails behind, to stop the descent of the cars if the rope breaks.
- n. A nautical name for a Scotch seaman.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a support for the genitals worn by men engaging in strenuous exercise
- n. a person trained to compete in sports
Short for jockey.
Short for jockstrap.(American Heritage® Dictionary of the English Language, Fourth Edition)
Unknown. Suggested to be a hypocoristic for John. (Wiktionary)
The computer slang meanings are derived from the athletic slang meanings. The athletic slang meanings in turn date from the middle 20th century and are simple abbreviations of jockstrap, which is in turn derived from the older slang meaning of jock itself, which dates from the 17th century, and whose etymology is unknown. (Wiktionary)