traffic light

noun

: a visual signal (such as a system of colored lights) for controlling traffic

Examples of traffic light in a Sentence

Take a left at the traffic light.

Recent Examples on the Web

There are two-lane roads instead of endless traffic lights, mature live oaks, and just enough of a hip streak to keep things interesting. — Jill Robbins, Travel + Leisure, 22 Sep. 2026

Zerfas said the intersection where Oates was trying to turn left was unmarked, without a stop sign or traffic light. — Sharon Bernstein, Sacbee.com, 18 Sep. 2026

In Phoenix, Arizona, Joe Depa with Ernst and Young said AI is using traffic light control that has already reduced congestion by 50%. — Erika Stanish, CBS News, 17 Sep. 2026

When the traffic light turns red, the blue light illuminates simultaneously. — Jessica Safavimehr, Southern Living, 17 Sep. 2026

Word History

First Known Use

1912, in the meaning defined above

Rhymes for traffic light

• acolyte
• aconite
• allanite
• alunite
• amberlite
• ammonite
• amorite
• amphitrite
• analyte
• anchorite
• andesite
• anhydrite

Kids Definition

traffic light

noun

: a visual signal (as a system of green, yellow, and red lights) for controlling traffic