Traffic light
WordNet
noun
(1) A visual signal to control the flow of traffic at intersections
WiktionaryText
Noun
- a signalling device positioned at a road intersection or pedestrian crossing to indicate when it may be safe to drive, ride or walk, using a universal colour code.
- the coloured dots on stamp sheet margins printed with offset litho or photogravure methods, used by the printers to check colour accuracy.
Synonyms
- stop light (US)
- traffic signal (US)
- robot (S.African)