from The American Heritage® Dictionary of the English Language, 4th Edition
- intransitive v. To cross a street illegally or in a reckless manner.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To behave as a jaywalker; to violate pedestrian traffic regulations by crossing a street away from a designated crossing or to walk in the part of the street intended for cars rather than on the sidewalk.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. cross the road at a red light
From jay2, inexperienced person.(American Heritage® Dictionary of the English Language, Fourth Edition)
Back-formation from jaywalker (Wiktionary)