black-letter

A Northern European style of type, 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.

Written or printed in black letter.

“a black-letter manuscript or book”

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

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