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black arm

American  

noun

Plant Pathology.
  1. a type or phase of bacterial blight of cotton, characterized by black, elongated lesions on the stem and branches, caused by a bacterium, Xanthomonas malvacearum.


Etymology

Origin of black arm

First recorded in 1905–10

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.

See Examples For:

In 1969, the Warren Court ruled for high school students who wore black arm bands as a protest.

From Los Angeles Times May 27, 2025

The Süddeutsche Zeitung, in its coverage of the Cologne attacks, prominently featured an illustration of a woman’s legs silhouetted in white, with the space in between taken up by a black arm and hand.

From The Guardian Aug. 1, 2019

We tied black arm bands on our left biceps in memory of cyclists who had died in collisions with motorists.

From Salon Jun. 6, 2013

A minute's silence will be held before kick-off and both teams will wear black arm bands while Rangers will wear a commemorative shirt with a special badge.

From BBC Dec. 30, 2010

Maybe he is curious about my long, black arm hair like I was curious about the golden fuzz on the arm of the rescue-ship sailor.

From "Inside Out and Back Again" by Thanhha Lai

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