old man's beard
noun
mass noun
1
- a wild clematis which has grey fluffy hairs around the seeds铁线莲。
1.1
- Genus Clematis, family Ranunculaceae: several species, in particular (in Britain) traveller's joy.铁线莲属, 毛莨科：数种, 尤指（英国的）葡萄叶铁线莲。
2
- a large lichen that forms shaggy greyish beard-like growths on the branches of trees老君须松萝。
2.1
- Usnea barbata and related species, order Parmeliales.拉丁名Usnea barbata 及相关种, 梅衣目。