from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A light on the rear of a vehicle that is activated when the brakes are applied. Also called brake light.
  • n. See traffic light.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A traffic control signal, traditionally consisting of three lights colored green, yellow/amber and red meaning proceed, prepare to stop and stop respectively.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a red light on the rear of a motor vehicle that signals when the brakes are applied to slow or stop
  • n. a visual signal to control the flow of traffic at intersections


Sorry, no etymologies found.


  • A metric called the stoplight process red, yellow, green was set up to track whether actions agreed upon in Afghanistan and Iraq were being implemented or whether policy needed to be adjusted or changed.

    In the Shadow of the Oval Office

  • Diann told me that last time she drove him, he asked if a stoplight were a semaphore.

    Never Change

  • The woman, however, said the stoplight was her first opportunity to jump from the van. - top

  • "It turns out the same sound that irritates me when someone pulls up next to me at a stoplight is the same sound that irritates the fish," Holderman said.


  • A stoplight should be the last resort, after alternatives like warning signs, flashing lights, school speed zones and crossing guards have been considered and dismissed.


  • I know here in Mazatlan, if you stop at a stop sign (not to be miscontrued to mean "stoplight") you're possibly putting yourself in harm's way ie someone may rear-end you!

    Page 2

  • But if the second stoplight is green — and it varies because the first stoplight turns green when I want it to — then I end up having to wait at the third stoplight, which is the longest and most inefficient stoplight north of Hildebrand.”

    Eight minutes, twenty one seconds

  • He says Celestica has a "stoplight" ranking for suppliers.

    Purchasing - Top Stories

  • This was useful, because with the "stoplight" system, few people were willing to score an area with the lowest mark of "red." --

  • "stoplight" indicators at the top of every window, there's a purple one that's never been seen outside the few developers who worked on the earliest builds of Mac OS X … plus all those who saw Steve Jobs 'Keynote presentation at MacWorld in January 2000, when Apple first unveiled its new Aqua interface.

    Musings from Mars » Articles


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