witches'-broom
noun
witch·es'-broom
ˈwi-chəz-ˌbrüm 
-ˌbru̇m
: an abnormal tufted growth of small branches on a tree or shrub caused especially by parasitic organisms (such as fungi, viruses, or aphids)
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“Witches'-broom.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/witches%27-broom. Accessed 21 Dec. 2024.
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