to clean by vigorous rubbing, esp with abrasive material
to clean (something) by vigorous rubbing, esp with abrasive material
to remove (e.g. dirt) by rubbing
to clear (e.g. a pipe or ditch) by removing dirt and debris
said of running water or a glacier: to create an eroded channel in (something)
to erode (a channel or pool)
to clean out (the bowels) by purging
said of livestock, esp cattle: to suffer from diarrhoea
scourer noun
[Middle English scouren from early Dutch or early Low German schūren, via early French escurer from Latin excurare to clean off, from ex-1 + curare to take care of, clean, from cura care]