To Burnish

1. (transitive) To make (something) smooth or shiny by rubbing; to polish or shine (something). Synonyms: wax, shine, polish, furbish, buff
2. (intransitive) To shine forth; to brighten; to become smooth and glossy, as from swelling or filling out; hence, to grow large.
3. (transitive, figuratively) To make (someone or something) appear positive and highly respected.