Smooth or glossy by or as if by rubbing or polishing.

made smooth and bright by or as if by rubbing; reflecting a sheen or glow; "bright silver candlesticks"; "a burnished brass knocker"; "she brushed her hair until it fell in lustrous auburn waves"; "rows of shining glasses"; "shiny black patents"

Smoothed by rubbing or polishing. Traditionally a piece of polished stone was used to burnish gold leaf.

This word has two distinct meanings in the world of numismatics, so you have to consider the context in order to discern the correct meaning. The word "burnished" can refer to specially prepared planchets (usually 18th century) that were used for specimen coins or other special coins of the era. These planchets were burnished at the Mint prior to the striking of the coin. As a second meaning, "burnished" can refer to any coin that was abrasively cleaned after it left the Mint, and the word is often used as a synonym for "whizzed" (the worst kind of cleaning, where the metal is actually moved around).

Describes wines that have a slightly singed, smoky, toasty or singed quality. This may come from certain growing or soil conditions, and/or slightly overripe grapes.

Used to describe overall sound or tone even when there's no furniture in sight.