black flag

Definitions

1. 1

   Any flag that has a black, or predominantly black, color, (especially)

   Any flag that has a black, or predominantly black, color, (especially):

2. 2

   To summon (a racing driver) to the pits by waving a black flag.

   • Jack Sears was driving the famous John Willment Cobra roadster "39PH." Sears was black flagged, and after returning to the track, drove a race that is still talked about today.
   • When a driver is black-flagged, he knows it.

The neighborhood