Definition from Wiktionary, the free dictionary
- IPA: /ˈmɪsəltəʊ/
mistletoe (plural mistletoes)
- Any of several parasitic evergreen plants with white berries that grow in the crowns of oaks, apple trees and other trees.
- A sprig of these plants used as a Christmas decoration.
Usage notes 
Derived terms 
either species of such evergreen plant