black spot
Americannoun
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Plant Pathology. a disease of plants, characterized by black spots on the fruit and foliage, twig lesions, defoliation, and rotting, caused by any of several fungi, as Diplocarpon rosae, or bacteria.
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British.
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a hazardous place in a road where accidents frequently occur.
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a dangerous area or place.
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noun
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a place on a road where accidents frequently occur
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any dangerous or difficult place
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a disease of roses, Diplocarpon rosae , that causes circular black blotches on the leaves
Etymology
Origin of black spot
First recorded in 1885–90
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Then came a seminar on citrus black spot, another recent arrival.
From Slate ● Apr. 20, 2026
Each specimen showed wing feathers that were white with a distinct black spot at the tip.
From Science Daily ● Mar. 18, 2026
WeWork, which finally went public in 2021 at a much reduced valuation than initially expected, remains a black spot for SoftBank that sunk billions for its investors.
From Reuters ● Nov. 1, 2023
The standout of the bunch featured each member of the Baird O’Connell clan on a New Year’s greeting card — each sporting a black spot around their eye just like Pepper had.
From Los Angeles Times ● Jul. 24, 2023
They were a bright yellow with a big black spot right in the middle.
From "Bud, Not Buddy" by Christopher Paul Curtis
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
