If something shimmers, it shines with a faint, unsteady light or has an unclear, unsteady appearance. The lights shimmered on the water Shimmer is also a noun. a shimmer of starlight. to shine with a soft light that looks as if it shakes slightly
An effect produced by the movement of masses of air with differing refractive indices Shimmer results in the blurring of remote sensed images, and is the ultimate control over the resolution
a weak and tremulous light; "the shimmer of colors on iridescent feathers"; "the play of light on the water" give off a shimmering reflection, as of silk shine with a weak or fitful light; "Beech leaves shimmered in the moonlight