shimmer
Verb
- To shine tremulously or intermittently; to gleam faintly.
- Of a mass of bees: to move their abdomens in a coordinated manner so as to produce a shimmering wave effect, thought to deter predators.
Noun
- A faint or veiled and tremulous gleam or shining.
- A measure of the irregularities in the loudness of a particular pitch over time.