witches'-broom

(redirected from witches-besom)

witches'-broom

(ˈwɪtʃˌbruːm) or

witchbroom

;

witches'-besom

n
(Plant Pathology) a dense abnormal growth of shoots on a tree or other woody plant, usually caused by parasitic fungi of the genus Taphrina

witch′es'-broom`



n.
an abnormal, brushlike growth of small, thin branches on woody plants, caused esp. by fungi and viruses.
[1865–70]