n.

1. （头发、羽毛、草等的）一簇，一束[（+of）]
   We saw a rabbit on a tuft of grass.

   我们看见在一簇草中有一只兔子。

2. 丛生植物；小树丛，矮树林
3. 【古】髭

vt.

1. 用丛毛装饰
2. 使分成簇（或束）

vi.

1. 形成一簇；丛生

n.

v.

1. provide with a tuft or tufts.
2. Needlework  strengthen (upholstery) by passing a cluster of threads through the material, so making depressions at regular intervals.