Meaning

originThe noun is derived from Middle English yelm, from Old English ġielm (“bunch or handful (of plant stems)”), from Proto-West Germanic *galmi (“bundle or handful of plants”), possibly ultimately from Proto-Indo-European *ǵʰelh₃- (“green, yellow”) or *gʰel- (“to cut”). The verb is derived from the noun.

Etymology from Wiktionary, CC BY-SA 3.0