(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.

plural of Black Friday

An omnivorous slug found in Europe and the Pacific Northwest, Arion ater, not always black, despite the name.

A form of film punctuation in which the picture is instantaneously darkened.

(philately) The world's first official postage stamp, issued in 1840 in the United Kingdom as part of postal reforms.

(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.