grayout

grayout

The perception of a transient loss or dimming of light, color, or clarity in one's vision due to a lack of oxygen reaching the brain. The intense g-forces can cause grayouts in fighter pilots, but they are usually still able to maintain control of the vehicle.
Farlex Dictionary of Idioms.
See also:
  • (there's) no peace/rest for the wicked
  • see no further than the end of one’s nose
  • (one's) day in court
  • (from) top to toe
  • (one's) old man
  • (one's) old lady
  • (one's) jig is up
  • at (one's) door
  • a/(one's) 20
  • a blot on your escutcheon