file down(redirected from file something down)
To reduce something with the use of a file. A noun or pronoun can be used between "file" and "down." Do you think I can just file down the corn on my foot?
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
file something down
to level off a protrusion by filing. File this edge down so no one gets cut on it. Please file down this edge.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
To cause wear on something by rubbing against or filing it, reducing its size: I filed down my fingernails before the party. The dentist filed the jagged tooth down.
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.