scratch at (something)

scratch at (something)

To scratch something continuously or a great deal. You need to stop scratching at that scab, or you're going to leave a scar! The dog scratched at the door, whining to be let out into the back yard.
See also: scratch
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

scratch at something

to scratch something. You shouldn't scratch at a chigger bite because it might get infected. Don't scratch at it!
See also: scratch
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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