Bible Encyclopedias
Witch Brooms
1911 Encyclopedia Britannica
Or "Birds' Nests," in botany, peculiar broom-like growths often seen on the branches of many trees. They are a dense development of branching twigs formed at one place on a branch as the result of the irritation set up by the presence of a mite or a fungus.
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Bibliography Information
Chisholm, Hugh, General Editor. Entry for 'Witch Brooms'. 1911 Encyclopedia Britanica. https://www.studylight.org/encyclopedias/eng/bri/w/witch-brooms.html. 1910.