Definitions

1. noun

a thin wedge-shaped piece of material, typically metal or plastic, used to adjust the fit of a part in a machine, or to level a surface.

“The mechanic inserted a shim to ensure the new part fit properly in the engine.”

2. verb

to adjust or fit something in place using a shim.

“She shimmed the picture frame to make it level on the wall.”

3. verb

to gain an unfair advantage or to cheat, especially in a game or contest.

“He shimmed his way to the top of the leaderboard by exploiting a loophole in the rules.”