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.

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Etymology

Origin of black arm

First recorded in 1905–10

Example Sentences

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

From Los Angeles Times

Manchester United are wearing black arm bands to commemorate the Munich Air Disaster.

From The Guardian

He was known in his time as the “the fighting editor” — a posture that The Planet reflected with a logo depicting a muscular Black arm whose clenched fist radiated lightning bolts.

From New York Times

Coach Giovanni Saverese wore a black arm band.

From Washington Times

Coach Giovanni Saverese wore a black arm band.

From Seattle Times