(phytopathology) A fungal disease among plants, particularly roses, that results in black spots on the leaves.

Any of a breed of black, hornless cattle from Scotland.

Any group of individuals who join a protest or demonstration, wearing black clothing including items to protect and/or conceal their faces and often engaging in violence and vandalism; the tactic of forming and participating in such a group.

Alternative spelling of pitch-black.

Any of various breeds of dog having black and tan colouring. / (US slang, now historical) A bar, nightclub etc. which had both black and white customers, especially one that featured black entertainers.

(simile) Completely black.

A tree of the species Betula lenta, with a dark bark resembling a cherry tree's and an aromatic bark and sap used for birch beer.

A tinamou, Tinamus osgoodi.

rain contaminated by fungi spores, soot, or other particulate matter / radioactive rain that fell on Hiroshima following the atomic bombing of 1945

plural of black card