VISCUM

Viscum, genus Viscum

(noun) type genus of the Viscaceae: Old World evergreen shrubs parasitic on many trees including oaks but especially apple trees, poplars, aspens and cottonwoods

Source: WordNet® 3.1

Vis"cum, n. Etym: [L.]

1. (Bot.)

Definition: A genus of parasitic shrubs, including the mistletoe of Europe.

2. Birdlime, which is often made from the berries of the European mistletoe.

Source: Webster’s Unabridged Dictionary 1913 Edition