Meaning

noun a place that is scoured (especially by running water)

verb examine minutely

verb clean with hard rubbing

originFrom Middle English scǒuren (“to polish, scour; to clean; to beat, whip”), from Middle Dutch scuren, schuren (“to clean; to polish”) or Middle Low German schǖren, of uncertain origin but probably from Old French escurer, from Medieval Latin scūrō, escūrō, excūrō (“to clean off”), from ex- (“thoroughly”) + cūrō (“to arrange, see to, take care of”), from cūra (“care, concern”) (from…

Etymology from Wiktionary, CC BY-SA 3.0