flashingcode

2. A pattern of quick on-and-off lights used by a machine to show an error.

The router showed a flashing code to tell us the internet was down.

3. A secret way of sending messages using short and long flashes of light.

The scouts learned a flashing code to talk across the lake at night.

4. A series of fast blinks used as a warning sign on a road or vehicle.

The truck's flashing code told drivers to slow down ahead.

5. A blinking pattern in a computer program that shows what it is doing.

The app displayed a flashing code while it loaded the game.