Of the darkest achromatic visual value
Having little or no light
Covered or stained with or as if with dirt or other impurities
Dark and depressing
Characterized by intense ill will or spite
To make dirty
To suffer temporary lack of consciousness
To keep from being published or transmitted
It's just a black snake.
A black cloud seemed to cover the earth.
Matthew had thick black hair, but Natalie's was blonde.
Another rider appeared on a black horse.
A quick glance through the window revealed the black car stopping beside the building.