Webster's Revised Unabridged Dictionary · 1913

Shimmer

Shimmer , intransitive verb

[Old English schimeren, Anglo-Saxon scimerian; akin to scīmian, scīman, to glitter, Dutch schemeren, German schimmern, Danish skimre, Swedish skimra, Anglo-Saxon scīma a light, brightness, Icelandic skīma, Gothic skeima a torch, a lantern, and English shine. r157. See Shine, v. i.]

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

Shimmer , noun

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