stoplight

from WordNet (r) 3.0 (2006)
stoplight
    n 1: a red light on the rear of a motor vehicle that signals
         when the brakes are applied to slow or stop [syn:
         {stoplight}, {brake light}]
    2: a visual signal to control the flow of traffic at
       intersections [syn: {traffic light}, {traffic signal},
       {stoplight}]
    

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