"Black denim" refers to a type of fabric that is black in color and has a texture similar to denim, which is commonly used to make jeans and other clothing items. Full definition
In order to keep it a bit more «fall», I paired with with black denim and black booties. (fashionloveletters.com)
If you're not quite ready for shades of blue, you can start out with white jeans and a denim shirt or a chambray top and a pair of black denim jeans. (cheersj.com)
Look like a star on your next road trip in a pair of black denim shorts teamed with a pink T - shirt. (myntra.com)