stinkweed

[ stingk-weed ]
/ ˈstɪŋkˌwid /

noun

any of various rank-smelling plants, as the jimson weed.

Origin of stinkweed

An Americanism dating back to 1745–55; stink + weed1

British Dictionary definitions for stinkweed

stinkweed
/ (ˈstɪŋkˌwiːd) /

noun

Also called: wall mustard a plant, Diplotaxis muralis, naturalized in Britain and S and central Europe, having pale yellow flowers, cylindrical seed pods, and a disagreeable smell when bruised: family Brassicaceae (crucifers)
any of various other ill-smelling plants, such as mayweed