noun

stoplight

stoplight, traffic light

Wait for the stoplight to turn green.

Wait for the stoplight to turn green.

The car stopped at the stoplight.

The car stopped at the stoplight.

at a stoplight at a signal controlling traffic The car stopped at the stoplight.

Synonyms: traffic light, traffic signal

A compound word from 'stop' and 'light'. Literally, a light that tells you to stop.

It's a 'light' that makes traffic 'stop'. The word itself explains its function perfectly.

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