To shine faintly or unsteadily; emit feeble or wavering rays of light; twinkle; gleam: as, the glimmering dawn; a glimmering lamp.To blink; wink; look unsteadily.Synonyms Gleam, Flicker, etc. See glare, intransitive verbn. A faint and wavering light; feeble and broken or scattered rays of light.n. A faint glow; a shimmer.n. A glimpse: same as glimmering, 2.n. Mica.n. Fire.