Black spot

In areas where black spot is only a problem after heavy rain or later in the season, restrict spraying to these times, or if yellowing or spotted foliage is detected.

Indian Queens is a hamlet just off the A30, a well-known traffic black spot, and Yellowknife was Margo Kidder's hometown in Canada.

What if—like so many rural parts of the county—this was a mobile black spot? That was easily tested. No, she had no problem dialling her own home number.

Near-synonyms: black hole, blind spot

Historians began to reanimate elements of the national historical memory partially destroyed by Soviet power. The closed book-shelfs^([sic]) and archives were (at least partially) opened, and “black spots” and taboos could now be tackled by national historians.

I went down on my knees at once. On the floor close to his hand there was a little round of paper, blackened on the one side. I could not doubt that this was the black spot; and taking it up, I found written on the other side, in a very good, clear hand, this short message: “You have till ten to-night.”