steel wool 
noun [mass noun]
Fine strands of steel matted together into a mass, used as an abrasive: sand lightly with fine steel wool and dust off thoroughly...
- Periodically, warm mineral oil should be applied with an absorbent cloth or very fine steel wool to the surface and edges.
- Rub greasy spots with a mild or moderate abrasive, such as fine steel wool, and a dish detergent until they disappear.
- If necessary, gently sand away stubborn rust on pruners and loppers with fine steel wool; use medium-grit sandpaper on larger tools.
- semesterly
- Semey
- semi
- semi-
- semi-acoustic
- semi-annual
- semi-annually
- semiaquatic
- semi-autobiographical
- semi-automatic
- semi-autonomous
- semi-basement
- semibold
- semibreve
- semicircle
- semicircular
- semicircular canals
- semicivilized
- semi-classical
- semicolon
- semiconducting
- semiconductor
- semi-conscious
- semi-conservative
- semi-crystalline