'old man's beard' definitions:

noun

Dense festoons of greenish-grey hairlike flexuous strands anchored to tree trunks and branches by sparse wiry roots; southeastern United States and West Indies to South America [syn: Spanish moss, old man's beard, black moss, long moss, Tillandsia usneoides]

noun

Vigorous deciduous climber of Europe to Afghanistan and Lebanon having panicles of fragrant green-white flowers in summer and autumn [syn: traveler's joy, traveller's joy, old man's beard, Clematis vitalba]

noun

Common climber of eastern North America that sprawls over other plants and bears numerous panicles of small creamy white flowers [syn: virgin's bower, old man's beard, devil's darning needle, Clematis virginiana]