Etymology From Middle English besme, beseme, from Old English besma, besema (“besom, broom, rod”), from Proto-West Germanic *besmō (“broom”).
1
A broom made from a bundle of twigs tied onto a shaft.
As a kid I went to the Russian Bath with my own father. … Down in the cellar men moaned on the steam-softened planks while they were massaged abrasively with oak-leaf besoms lathered in pickle buckets.1976 September, Saul Bellow, Humboldt’s Gift, New York, N.Y.: Avon Books, →ISBN, page 56:
At Ickwell Green, in Bedfordshire, there is a permanent maypole. There, the May Queen is accompanied by moggies (raggedly dressed women) carrying besoms - birch-twig brooms.1980, AA Book of British Villages, Drive Publications Ltd, page 263:
"Eh, but she was a besom, if a' tales be true !"1903, Samuel Rutherford Crockett, The Dark O' the Moon: A Novel, page 130:
Janet's eyes began to look dim, and I had to frown at her very hard; then I had to turn my frown on Jean ... and Janet, the besom, took advantage of my divided attention.1917, A.S. Neill., A Dominie Dismissed, page 10:
2 more examples
Uncle Angus went on about the behavior of the car. "She's a besom, a proper besom, her and her gears. She'll be the death of me yet one of these days."1963, Margaret McLean MacPherson, The Shinty Boys, page 187:
"She's a besom but no' bad at times, like now," Agnes said as she bit into a dough-ring.2013, Nora Kay, Best Friends:
3
Any cleansing or purifying agent.
"The march of an army through a conquered country supposing it to be a highly civilized one, is a besom of destruction, whose havoc, moral and material, it would take at least a century to recover."1851, “A Few Words about War and the Peace Congress.”, in Littell’s Living Age, volume 28, page 364:
Now, in her iceberg-white, holily laundered crinoline nightgown, under virtuous polar sheets, in her spruced and scoured dust-defying bedroom in trig and trim Bay View, a house for paying guests at the top of the town, Mrs Ogmore-Prichard widow, twice, of Mr Ogmore, linolium, retired, and Mr Prichard, failed bookmaker, who maddened by besoming, swabbing and scrubbing, the voice of the vacuum-cleaner and the fume of polish, ironically swallowed disinfectant...1954, Dylan Thomas, Under Milk Wood […] , New York: New Directions, page 13: