Definitions
1.verbTo make smooth or shiny by rubbing; to polish; to shine."In pottery, a stone is sometimes used to burnish a pot before firing, giving it a smooth, shiny look."
2.verbTo shine forth; to brighten; to become smooth and glossy, as from swelling or filling out; hence, to grow large.
3.verb(metaphoric) To make appear positive and highly respected.
4.adjectivePolished, made shiny by rubbing (especially with a burnisher).
5.adjectiveBlazing, bright.