(idiomatic) Explicitly, in writing, clearly and without doubt or misunderstanding, without any grey areas. / (literally) Using shades of gray rather than color.

plural of Black Friday

A perennial member of the sunflower family (Asteraceae), cultivated as a root vegetable (Pseudopodospermum hispanicum, syn. Scorzonera hispanica).

A Friday falling on the 13th day of the month (and therefore doubly ill-omened). / (possibly obsolete) Good Friday. / Any Friday actually darkened by catastrophe, or the anniversary thereof.

A species of truffle, Tuber melanosporum, darker than the white truffle, most commonly from France but also found in other parts of Europe, that is prized as a culinary ingredient.

An eye which has been bruised showing noticeable hematoma, especially after receiving a blow. / (figuratively) A defeat. / (figuratively) Damage to a reputation.

trade that is in violation of restrictions, rationing, or price controls / the people who engage in such trade (considered as a group), or that sector of the economy

(film) To end a film or a scene of a film by causing the image to be gradually dimmed into black.

(film) An ending of this kind.

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