- (a.) Written or printed in black letter; as, a black-letter manuscript or book.
- (a.) Of or pertaining to the days in the calendar not marked with red letters as saints' days. Hence: Unlucky; inauspicious.
- (a.) Given to the study of books in black letter; that is, of old books; out of date.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). black-letter. Retrieved September 21, 2026, from http://smartdefine.org/black-letter/definitions/1980721 |
| Chicago | Webster's. 2011. "black-letter" http://smartdefine.org/black-letter/definitions/1980721 (accessed September 21, 2026). |
| Harvard | Webster's 2011, black-letter, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/black-letter/definitions/1980721>. |
| MLA | Webster's. "black-letter" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/black-letter/definitions/1980721> |