What does "mistletoe" mean?

Mistletoe: A parasitic evergreen plant of Europe (Viscum album), bearing a glutinous fruit. When found upon the oak, where it is rare, it was an object of superstitious regard among the Druids. A bird lime is prepared from its fruit. [Written also misletoe, misseltoe, and mistleto.] Lindley. Loudon. Note: The mistletoe of the United States is Phoradendron flavescens, having broader leaves than the European kind. In different regions various similar plants are called by this name.