To pry something upward with or as with a jimmy (a short crowbar). A noun or pronoun can be used between "jimmy" and "up." Primarily heard in US. I set about jimmying up all the rotting floorboards on the patio. See if you can jimmy the lid of the container up with a screwdriver. I'm dying to find out what's inside!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
jimmy something up
pry something up. See if you can jimmy this window up. Can you jimmy up this window?
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.