Definitions of gloss:

• noun:   an explanation or definition of an obscure word in a text
• noun:   an outward or token appearance or form that is deliberately misleading

  Example: "He tried to give his falsehood the gloss of moral sanction"

• noun:   the property of being smooth and shiny
• noun:   an alphabetical list of technical terms in some specialized field of knowledge; usually published as an appendix to a text on that field
• verb:   provide an interlinear translation of a word or phrase
• verb:   provide interlinear explanations for words or phrases
• verb:   give a shine or gloss to, usually by rubbing
• verb:   gloss or excuse
• name:  A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #16926)