hexenbesen
he·xen·be·sen
noun
1.
an abnormal tufted growth of small branches on a tree or shrub caused by fungi or insects or other physiological disturbance
Origin
From German Hexenbesen, literally "witch's broom".
Related words
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.