Old English brom, popular name for several types of shrubs common throughout Europe (used medicinally and for fuel) and characterized by long, slender branches and many yellow flowers, from Proto-Germanic *bræmaz "thorny bush" (source also of Dutch braam, German Brombeere "blackberry"), from PIE *bh(e)rem- "to project; a point."
As "twigs of broom tied together to a handle to make a tool for sweeping," mid-14c. Traditionally, both the flowers and sweeping with broom twigs were considered unlucky in May (Suffolk, Sussex, Wiltshire, etc.).
"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.
"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.
also jimsonweed, 19c. American English corrupt shortening of Jamestown-weed (1680s), from Jamestown, Virginia colony, where it was discovered by Europeans (1676), when British soldiers mistook it for an edible plant and subsequently hallucinated for 11 days.
1818, said to be so called from the name of an Indian who used it to cure typhus in New England. The story dates from 1822.
also broom-stick, "stick or handle of a broom," 1680s, from broom (n.) + stick (n.). Earlier was broom-staff (1610s). Broom-handle is from 1817. The witch's flying broomstick originally was one among many such objects (pitchfork, trough, bowl), but the broomstick became fixed as the popular tool of supernatural flight via engravings from a famous Lancashire witch trial of 1612. Broomstick marriage, in reference to an informal wedding ceremony in which the parties jump over a broomstick, is attested from 1774.
house or family which reigned in England from 1154 to 1485, the name apparently is literally "broom-plant" (French plante genêt), from Latin genista "broom plant."