To search thoroughly inside of or all around some place or thing for someone or something. I've been scouring the internet for information about this strange new app my kids are using. We scoured the warehouse for evidence, but we couldn't find anything that would hold up in court.

To remove something (off of someone or something else) with vigorous scrubbing, especially by using a very abrasive brush or cleaning pad. A noun or pronoun can be used between "scour" and "off." You'll need to scour off the dirt before you start boiling the potatoes. I spent the whole day scouring rust off the fence around our property.

To remove something off of someone or something else with vigorous scrubbing, especially by using a very abrasive brush or cleaning pad. You'll need to scour the dirt off the potatoes before you start boiling them. I spent the whole day scouring rust off of the fence around our property.

To remove something out of something else with vigorous scrubbing, especially by using a very abrasive brush or cleaning pad. I spent nearly an hour trying to scour the dried paint out of the cups, but I just couldn't get it all out. Take this wire brush and scour the rust out of the rims of the wheels.