Definition of mistletoe
: a European semiparasitic green shrub (Viscum album of the family Loranthaceae, the mistletoe family) with thick leaves, small yellowish flowers, and waxy-white glutinous berries
broadly
: any of various plants of the mistletoe family (as of an American genus Phoradendron) resembling the true mistletoe
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Merriam-Webster unabridged
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Time Traveler for mistletoe
The first known use of mistletoe was before the 12th century
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