Noun
1. an explanation or definition of an obscure word in a text
2. an alphabetical list of technical terms in some specialized field of knowledge; usually published as an appendix to a text on that field
3. the property of being smooth and shiny
4. 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"