Meaning

originFrom Middle English glim, glimme (“radiance; shining brightness”), of uncertain further origin. Perhaps from Old English gleomu (“splendor”) and/or Old Norse *glim, *glima, both apparently from Proto-Germanic *glimō, from Proto-Indo-European *ǵʰley- (“to gleam, shimmer, glow”). Compare Norwegian Nynorsk glim, dialectal Old Swedish glim, glimma.

Etymology from Wiktionary, CC BY-SA 3.0