shim·mer 
(sh
ĭm
ər)
intr.v. shim·mered,
shim·mer·ing,
shim·mers 1. To shine with a subdued flickering light: Fireflies shimmered in the night sky.
2. To be reflected as a subdued, flickering light: The moon shimmered on the pond's surface.
n. A flickering or tremulous light; a glimmer.
[Middle English shimeren, from Old English scimerian.]
shimmer·ing·ly adv.
shimmer·y adj.