burnish

Origin

The verb is derived from Middle English burnishen, burnysshen (“to polish, burnish; (figuratively) to brighten, give lustre to; to clean (something) until shiny; to decorate (with something shiny), adorn”) [and other forms], from burniss-, a stem of Old French burnir (compare, for example, the first-person present singular indicative form burnis), a variant of brunir (“to make clean and shiny, polish; to make brown”) (modern French brunir), from Frankish *brūnijan (“to polish, make resplendent”), from Proto-Germanic *brūnijaną (“to decorate; tan”), from Proto-Germanic *brūnaz (“brown”, adjective), possibly from Proto-Indo-European *bʰerH- (“brown”, adjective). Unrelated to burn.