black-letter

Written or printed in black letter.

Of or relating to the days in the calendar not marked with red letters as saints' days; unlucky; inauspicious.

(figurative) Given to the study of books in black letter; old-fashioned.

A highly calligraphic Western European script style used from approximately 1150.

A Northern European style of type based on the script, with contrasting thick-and-thin, angular strokes forming upright letterforms, and usually set with a dark typographic colour on the page.

Text set in black-letter type.

The basic standard elements for a particular field of law, which are generally known and free from doubt or dispute.