godan verb (-su)
scrape off; rub off
To remove something by rubbing or scraping, often with a tool or abrasive surface.
鍋の焦げをたわしで擦り落とした。
I scrubbed off the burnt bits from the pot with a scourer.
壁の落書きを消しゴムで擦り落
I rub the graffiti off the wall with an eraser.