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.

Origin of black arm

First recorded in 1905–10

Words nearby black arm

black and blue, black and tan, black and tan coonhound, black and tans, black and white, black arm, black art, black arts movement, black as night, black balsam, black basaltes