a black spot

a black spot

a place that is notorious for something, especially a high crime or accident rate.
1992 Radio Times Jonathon Porritt meets the ‘green warriors’ who are spearheading campaigns to clean up some of the world's worst pollution black spots.
See also: black, spot

a ˈblack spot

a place where accidents often happen, especially on a road: This junction is a well-known accident black spot.
See also: black, spot