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.

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

Alternative spelling of pitch-black.

A species of mulberry (Morus nigra), a small deciduous tree growing to 10–13 m tall and native to southwestern Asia. / The edible fruit of this tree.

(Australia, uncountable, slang) An Australian aboriginal woman viewed by a white man as a sexual partner. / (Australia, uncountable, slang) Sexual intercourse with an Australian aboriginal woman.

(countable) A black bow tie worn with a dinner jacket.

(obsolete) A blackish matter, resembling coffee grounds and due to hæmorrhage, vomited in severer cases of yellow fever; also, the disease of yellow fever itself.

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.

A small passerine bird, Phoenicurus ochruros, from south and central Europe

Moderately formal; usually requiring a dinner jacket (tuxedo) for men.