rubric
rub·ric
noun
1.
an authoritative rule of conduct or procedure
2.
an explanation or definition of an obscure word in a text
verb
Origin
From Middle English rubriche, rubrike, from Old French rubrique, from Latin rūbrīca (“red ochre”), the substance used to make red letters, from ruber (“red”), from Proto-Indo-European *h₁rewdʰ-.
Related words
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.