black spot 
noun
1British A place or area marked by a particular trouble or concern: an unemployment black spot an accident black spot...
- He called for motorists to be more considerate at many of the area's traffic black spots so jams were not made worse by drivers behaving badly.
- They overspeed and overtake what they consider slow vehicles at any point, even at areas known as black spots.
- This road has many accident black spots particularly around the Dromore west area.
2 [mass noun] A fungal or bacterial disease of plants, especially roses, producing black blotches on the leaves.
- Rose black spot is caused by the fungus Diplocarpon rosae, subdivision Ascomycotina.
- A soaker hose waters the base of every plant, thereby minimizing black spot and mildew problems that often arise from wetting the leaves.
- To prevent black spot from infecting new plants, spray with a synthetic chemical fungicide once every 10 days, starting in midspring.
- German Sea
- German sheepdog
- German sheet
- German sheet glass
- German shepherd
- German silver
- German sixth
- German sock
- German South West Africa
- German steel
- German stitch
- German tamarisk
- German text
- German tinder
- Germantown
- German vitriol
- German wagon
- German wallflower
- German watch
- German wool
- Germany
- germaphobe
- germ area
- germarium
- germatic