gloss

Short definition from Wiktionary

Noun

1. 1
   A surface shine or luster.
2. 2
   A superficially or deceptively attractive appearance.
3. 3
   A brief explanatory note or translation of a foreign, archaic, technical, difficult, complex, or uncommon expression, inserted after the original, in the margin of a document, or between lines of a text.
4. 4
   Synonym of glossary, a collection of such notes.
5. 5
   An expression requiring such explanatory treatment.
6. 6
   An extensive commentary on some text.
7. 7
   An interpretation by a court of a specific point within a statute or case law.
8. 8
   A definition or explanation of a word sense.

Verb

1. 1
   To give a gloss or sheen to.
2. 2
   To make (something) attractive by deception
3. 3
   To become shiny.
4. 4
   Used in a phrasal verb: gloss over (“to cover up a mistake or crime, to treat something with less care than it deserves”).
5. 5
   To add a gloss to (a text).