See burnish in Webster's New World Roget's A-Z Thesaurus II
verb
To give a gleaming luster to, usually through friction:
buff1, furbish, glaze, gloss, polish, shine, sleek. See light
noun
A radiant brightness or glow, usually due to light reflected from a smooth surface:
glaze, gloss, luster, polish, sheen, shine, sleekness. See light
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