1. Dark, fertile soil, typically found in prairie or grassland regions, characterized by high organic matter and clay content.
Usage: Usually plural; chiefly North American; Often used in agricultural and geological contexts
2. Regions or areas of land characterized by such dark, fertile soil.
Usage: Geographical term; often capitalized when referring to specific regions

Examples

• The blacklands of Texas are known for their exceptional fertility.
• Farmers prize the blacklands for growing cotton and grain.
• The region's blacklands were formed over thousands of years of prairie vegetation decomposition.
• Early settlers were drawn to the blacklands because of their agricultural potential.
• The blacklands soil retains moisture well, making it ideal for certain crops.