| 1. | a title, heading, direction, or the like, in a manuscript, book, statute, etc., written or printed in red or otherwise distinguished from the rest of the text. |
| 2. | a direction for the conduct of divine service or the administration of the sacraments, inserted in liturgical books. |
| 3. | any established mode of conduct or procedure; protocol. |
| 4. | an explanatory comment; gloss. |
| 5. | a class or category |
| 6. | Archaic. red ocher. |
| 7. | written, inscribed in, or marked with or as with red; rubrical. |
| 8. | Archaic. red; ruddy. |