gloss, rubric (noun)

an explanation or definition of an obscure word in a text

glossary, gloss (noun)

an alphabetical list of technical terms in some specialized field of knowledge; usually published as an appendix to a text on that field

polish, gloss, glossiness, burnish (noun)

the property of being smooth and shiny

semblance, gloss, color, colour (verb)

an outward or token appearance or form that is deliberately misleading

"he hoped his claims would have a semblance of authenticity"; "he tried to give his falsehood the gloss of moral sanction"; "the situation soon took on a different color"

gloss (verb)

give a shine or gloss to, usually by rubbing

gloss, comment, annotate (verb)

provide interlinear explanations for words or phrases

"He annotated on what his teacher had written"

gloss (verb)

provide an interlinear translation of a word or phrase

color, colour, gloss (verb)

give a deceptive explanation or excuse for

"color a lie"