Viscin \Vis"cin\, n. (Chem.) A clear, viscous, tasteless substance extracted from the mucilaginous sap of the mistletoe ({Viscum album}), holly, etc., and constituting an essential ingredient of birdlime.
Viscum album n : Old World parasitic shrub having branching greenish stems with leathery leaves and waxy white glutinous berries; the traditional mistletoe of Christmas [syn: {mistletoe}, {Old World mistletoe}]