shim•merPronunciation: (shim'ur), [key]
to shine with or reflect a subdued, tremulous light; gleam faintly.
to appear to quiver or vibrate in faint light or while reflecting heat waves.
a subdued, tremulous light or gleam.
a quivering or vibrating motion or image as produced by reflecting faint light or heat waves.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.