whiteout

noun

1. Meteorology.
   1. a condition, found in polar regions, in which uniform illumination from snow on the ground and from a low cloud layer makes features of the landscape indistinguishable.
   2. a condition of heavily falling or blowing snow in which visibility is very poor.
2. an act or instance of whiting out with a correction fluid.
3. a white correction fluid used for this: a bottle of whiteout.
4. a mistake, as in typing, that has been whited out with a correction fluid.