polished

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Made shiny and smooth by rubbing or chemical action.
• adjective Naturally shiny and smooth.
• adjective Having the husk or outer layers removed. Used of grains of rice.
• adjective Refined or sophisticated.
• adjective Having no imperfections or errors; well-executed; flawless.

from The Century Dictionary.

• Made smooth by polishing.
• Having naturally a smooth, lustrous surface, like that produced by polishing; specifically, in entomology smooth and shining, but without metallic luster.
• Brought by training or elaboration to a condition void of roughness, irregularity, imperfections, or inelegances; carefully elaborated; especially, elegant; refined; polite.
• Purified; absolved.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Made smooth and glossy, as by friction; hence, highly finished; refined; polite

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Made smooth or shiny by polishing.
• adjective refined, elegant
• verb Simple past tense and past participle of polish.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective (of grains especially rice) having the husk or outer layers removed
• adjective (of lumber or stone) to trim and smooth
• adjective showing a high degree of refinement and the assurance that comes from wide social experience
• adjective perfected or made shiny and smooth