Weed
Old English wēod (noun), wēodian (verb), of unknown origin; related to Dutch wieden (verb).
wiktionary
From Middle English weed, weod, from Old English wēod(“weed”), from Proto-West Germanic *weud(“weed”). Cognate with Saterland Frisian Jood(“weed”), West Frisian wjûd(“weed”), Dutch wied(“unwanted plant, weed”), German Low German Weed(“weed”), Old High German wiota(“fern”).
From Middle English weeden, weden, from Old English wēodian(“to weed”), from Proto-Germanic *weudōną(“to uproot, weed”). Cognate with West Frisian wjûde, wjudde(“to weed”), Dutch wieden(“to weed”), German Low German weden(“to weed”).
From Middle English wede, from Old English wǣd(“dress, attire, clothing, garment”), from Proto-Germanic *wēdiz, from which also wad, wadmal. Cognate with Dutch lijnwaad, Dutch gewaad, German Wat.
From Scots weid, weed. The longer form weidinonfa, wytenonfa (Old Scots wedonynpha) is attested since the 1500s. Jamieson's Etymological Dictionary of the Scottish Language analyses the longer form as a compound meaning "onfa(ll) of a weed", whereas the Scottish National Dictionary/DSL considers the short form a derivative of the longer form, and derives its first element from Old English wēdan(“to be mad or delirious”), from wōd(“mad, enraged”).
From the verb wee.
etymonline
weed (n.)
"plant not valued for use or beauty," Old English weod, uueod "grass, herb, weed," from Proto-Germanic *weud- (source also of Old Saxon wiod, East Frisian wiud), of unknown origin. Also applied to trees that grow abundantly. Meaning "tobacco" is from c. 1600; that of "marijuana" is from 1920s. The chemical weed-killer is attested by 1885.
weed (v.)
"to clear the ground of weeds," late Old English weodian "to weed," from the source of weed (n.). Figurative use by c. 1400. Related: Weeded; weeding; weeder.
