scratch away at (something)

(redirected from scratch away at)

scratch away at (something)

To scrape some surface steadily or continuously with something hard, sharp, or abrasive. I've been scratching away at this spark plug for nearly an hour, but I just can't seem to get rid of all the rust. The dog scratched away at the door, whining to be let out into the back yard.
See also: away, scratch