pulsinglight
nounUK /ˈpʌlsɪŋ laɪt/
US /ˈpʌlsɪŋ laɪt/
A light that turns on and off again and again.
The pulsing light on the toy robot showed it was ready to play.
OTHER MEANINGS
2. A light whose brightness rises and falls smoothly like a heartbeat.
The pulsing light of the fireflies filled the summer night.
3. A warning light that blinks to get people's attention.
A pulsing light on the dashboard told the driver the door was open.
4. The rhythmic glow of a screen or device that is working.
The pulsing light on the router meant the internet was connected.