scour

There are two distinct homographs of the verb scour in English. One means to clean something by rubbing it hard with a rough object; that scour, which goes back to at least the early 14th century, probably derives—via Middle Dutch and Old French—from a Late Latin verb, excurare, meaning "to clean off." The other, which appears in the 13th century, is believed to derive from the Old Norse skūr, meaning "shower." (Skūr is also distantly related to the Old English scūr, the ancestor of our English word shower.) Many disparate things can be scoured. For example, one can scour an area (as in "scoured the woods in search of the lost dog") or publications (as in "scouring magazine and newspaper articles").