rubric

(noun) an authoritative rule of conduct or procedure.

(noun) an explanation or definition of an obscure word in a text. Synonyms: gloss.

(noun) directions for the conduct of Christian church services (often printed in red in a prayer book).

(noun) a heading that names a statute or legislative bill; may give a brief summary of the matters it deals with. Synonyms: title, statute title. Example: "Title 8 provided federal help for schools."

(noun) a title or heading that is printed in red or in a special type.

(noun) category name. Example: "It is usually discussed under the rubric of `functional obesity'."

(verb) adorn with ruby red color.