Shimmer

Part of speech: noun (n.)

A faint, tremulous light; a gleaming; a glimmer. TWo silver lamps, fed with perfumed oil, diffused . . . a trembling twilight-seeming shimmer through the quiet apartment. Sir W. Scott.

Part of speech: verb (v.)

To shine with a tremulous or intermittent light; to shine faintly; to gleam; to glisten; to glimmer. The shimmering glimpses of a stream. Tennyson.