Synonyms 1. shine, brighten, burnish, buff, smooth. 8. shine, gleam. Polish,gloss,luster,sheen refer to a smooth, shining, or bright surface from which light is reflected. Polish suggests the smooth, bright reflection often produced by friction: rubbed to a high polish. Gloss suggests a superficial, hard smoothness characteristic of lacquered, varnished, or enameled surfaces: a gloss on oilcloth, on paper. Luster denotes the characteristic quality of the light reflected from the surfaces of certain materials (pearls, silk, wax, freshly cut metals, etc.): a pearly luster. Sheen, sometimes poetical, suggests a glistening brightness such as that reflected from the surface of silk or velvet, or from furniture oiled and hand-polished: a rich velvety sheen.
Finish or dispose of, especially quickly and easily. For example, We polished off the pie in no time, or If everyone helps, we can polish off this job today. This usage, dating from the early 1800s, came from boxing, where it originally meant "to defeat an opponent quickly and easily." By the 1830s it was used more generally.