To give feeble or scattered rays of light; to shine faintly; to show a faint, unsteady light; as, the glimmering dawn; a glimmering lamp.

A faint, unsteady light; feeble, scattered rays of light; also, a gleam.

a flash of light (especially reflected light)

shine brightly, like a star or a light

Just the ticket when you want to shine at a special occasion. Certain yarns, particularly trilobal yarns, reflect light to create the glimmer effect.

This term refers to a light reflection from the yarn, mainly from a trilobal yarn which gives the glimmer effect by reflecting the light.