flashing lights
noun phraseUK /ˈflæʃɪŋ laɪts/
US /ˈflæʃɪŋ laɪts/
Lights that turn on and off very fast, again and again.
The flashing lights on the police car made everyone look.
OTHER MEANINGS
2. Bright lights that blink to warn people of danger.
The flashing lights near the road told drivers to slow down.
3. Lights on a machine or device that blink to show it is working.
The flashing lights on the router mean it is connected.
4. Lights that blink quickly at a party or show.
The flashing lights on the stage made the concert exciting.