black ice

1. 1.

   a thin coating of ice (as from freezing mist) on a road or sidewalk; nearly invisible but very hazardous

   Broaderice

Questions about black ice

What does black ice mean?

black ice means "a thin coating of ice (as from freezing mist) on a road or sidewalk; nearly invisible but very hazardous".

Is black ice a common word?

black ice is banded "Uncommon" — turns up in careful writing rather than conversation. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.