What does red light mean?

Definitions for red light
red light

Here are all the possible meanings and translations of the word red light.

Princeton's WordNet

  1. red light, warning lightnoun

    a cautionary sign of danger

  2. red lightnoun

    the signal to stop


  1. Red light

    an electrically operated set of lights at a road intersection which has different lights visible to traffic from different directions, designed to control vehicle traffic through the intersection. Each set of lights typically has a colored red light and also green and amber lights; the color of the light which is lighted at any one time changes automatically to control the flow of traffic through the intersection, allowing flow from different directions in alternating succession. Also called traffic light, traffic signal or stop light. When the red light is illuminated the signal means to stop; green means to go; and amber means to stop or procede through the intersection with caution. In simple intersections of two roads, a red light visible to traffic on one road will usually be accompanied by a green light visible to traffic on the intersecting road. In some locations the lights may be set to be illuminated in other sequences or combinations; a blinking red light is typically equivalent to a

  2. Red light

    the condition of a traffic light when the signal visible to the driver of a vehicle is red, signalling that the vehicle must stop and not enter the intersection; I got seven red lights on the way to work.

  3. Red light

    figuratively, a sign or signal that one must stop doing what one is presently doing; as, a fatal side effect is often a red light to continuation of a clinical trial.


  1. red lightnoun

    A warning light, especially as a traffic signal indicating 'stop'.

  2. red lightnoun

    A sign of a brothel.

  3. red lightnoun

    Denial to proceed. Ruling out of any possibility.


  1. Red Light

    Red Light is a 1949 film noir, directed and produced by Roy Del Ruth. It stars George Raft and Virginia Mayo and is based on the story "This Guy Gideon" by Don "Red" Barry, featuring strong religious overtones.

Suggested Resources

  1. red light

    Read the full text of the Red light poem by William Carlos Williams on the Poetry.com website.

Matched Categories

How to pronounce red light?

How to say red light in sign language?


  1. Chaldean Numerology

    The numerical value of red light in Chaldean Numerology is: 9

  2. Pythagorean Numerology

    The numerical value of red light in Pythagorean Numerology is: 2

Examples of red light in a Sentence

  1. Wim Peters:

    Red light is very important for photosynthesis and growth, but you need blue light to give the tomato a good shape.

  2. Francois Godement:

    In the past two years, France has actually been quite open and non-interventionist for Chinese investment, up to now, there hasn't been any red light for taking stakes in big French companies in either real estate or tourism.

  3. Diogo Kotscho:

    Maybe when it starts to harm his business the red light will flash, top players earn more from image rights than from actually playing football, so if the sponsors start disappearing that might be the moment he starts to pay attention.

  4. Google Translate:

    In the smoke haze, the most abundant particles are around onemicrometre in size, but these particles do not change the colour of the light we see, there are also smaller particles, around 0.05 micrometres or less, that dont make up a lot of the haze but are still somewhat more abundant during a haze period [than a normal non-haze period]... but this is enough to give an extra tendency to scatter red light more in the forward and backward directions than blue light - and that is why would you see more red than blue.

  5. Charles Whitehead:

    As soon as I see a Chinese-sponsored company, with this kind of regulatory history, a red light goes on.

Images & Illustrations of red light

  1. red lightred lightred lightred lightred light

Translations for red light

From our Multilingual Translation Dictionary

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    separate or cut with a tool, such as a sharp instrument
    • A. cleave
    • B. denudate
    • C. abduct
    • D. loom

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