Shim :: Shim (n.) A kind of shallow plow used in tillage to break the ground, and clear it of weeds..
Shim :: Shim (n.) A thin piece of metal placed between two parts to make a fit.
Shimmer :: Shimmer (v. i.) To shine with a tremulous or intermittent light; to shine faintly; to gleam; to glisten; to glimmer.
Shimmer :: Shimmer (n.) A faint, tremulous light; a gleaming; a glimmer..