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black arm

noun Plant Pathology.

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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Origin of black arm

First recorded in 1905–10

Words nearby black arm

black and tan, black and tan coonhound, Black and Tans, black-and-tan terrier, black and white, black arm, black art, Black Arts Movement, black as night, black-a-vised, black-backed gull
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020