köken: From Old Galician-Portuguese erva, from Latin herba, from Proto-Indo-European *gʰreh₁- (“to grow, become green”). Cognate with Galician herba and Spanish hierba.
köken: From Old Norse urt, oblique case form of Proto-Germanic *wrōts, from Proto-Indo-European *wrd- (“root”). Compare with English wort and the Latin rādīx (“root”). Cognate with the Icelandic rót; Old English rōt (whence Middle English root (“the underground part of a plant”), whence English root).
köken: Borrowed from Old Swedish yrt (modern Swedish ört), from Old Norse urt, oblique case form of Proto-Germanic *wrōts, from Proto-Indo-European *wréh₂ds (“root”). Compare English wort, root and Latin rādīx (“root”).
köken: Etymology tree Proto-Indo-European *gʰreh₁-der. Proto-Indo-European *gʰer-dʰ? Latin herba Traditionally derived from Proto-Indo-European *gʰer-dʰ, from Proto-Indo-European *gʰreh₁- (“to grow, become green”), and compared to grāmen (“grass, turf”) and English grass. However, De Vaan is skeptical of this derivation, preferring the variant *ǵʰreh₁-, noting that *gʰer-dʰ cannot be derived from this…
grass · weed (any plant unwanted at the place where and at the time when it is growing) · weed; marijuana
köken: From Proto-Vietic *kɔh (“grass”). Cognate with Thavung ก็อฮ. Attested as cỏ in the Dictionarium Annamiticum Lusitanum et Latinum (1651). The sense "marijuana" is probably a calque of English weed.