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To remove something (from some surface) with or as with the vigorous scrubbing of a rough, sharp, or hard-edged instrument. A noun or pronoun can be used between "scrape" and "off." He used a putty knife to scrape off the old paint from the wall. Stop scraping your scabs off or you'll end up with a scar! I had to use my fingers to scrape the mud off my windshield.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
scrape something off (of) someone or somethingand scrape something off
to rub or stroke something off someone or something. (Of is usually retained before pronouns.) I sat down and scraped the caked mud off of me. It was everywhere! Jake scraped off the rust.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.