A dark, rich alluvial soil found in the Deccan region of India, produced by the disintegration of black lava and suitable for cotton cultivation; = regur.
Origin
Early 19th century.
Definition of black cotton soil in US English:
black cotton soil
noun
A dark, rich alluvial soil found in the Deccan region of India, produced by the disintegration of black lava and suitable for cotton cultivation; = regur.