Scourer

Noun

1. A tool used to scour, usually used to clean cookware.

   "A scourer may be in the form of a mesh (ball) of wires, a flat piece of a rough fabric, or a pad with a soft sponge-like side and a more abrasive side."

2. Agent noun of scour; a person who scours.
3. A rover or footpad; a prowling robber.