n.

1. 灰尘，尘土[U]
   His clothes were covered with dust.

   他衣服上全是灰尘。

2. 粉末[U]
3. 遗骸[U]
4. 【英】灰烬；垃圾
5. 屈辱
   The dust has cleared.

   骚乱已经平息了。

6. 一文不值的东西
7. 骚动，混乱[the S]
8. 金粉
9. 【美】【俚】钱，现钱[the S]

vt.

1. 除去……的灰尘[（+off/down）]
2. 掸去，擦去，扫去，刷去
   He dusted his trousers.

   他掸掉裤子上的尘土。

3. 使布满灰尘；撒农药等[（+with/over）]
   The airplane dusted the crops with an insecticide.

   飞机给庄稼撒农药。

vi.

1. 掸掉灰尘；打扫
   She dusts every day.

   她每天掸灰尘。

2. 变得灰扑扑
3. 喷撒农药
4. （鸟）用沙土洗澡

n.

1. fine, dry powder consisting of tiny particles of earth or waste matter.
   ▸any material in the form of tiny particles:

   coal dust.
   ▸literary a dead person's remains.
2. an act of dusting.

v.

1. remove dust from the surface of.
   ▸ (dust something down/off) bring something out for use again after a long period of neglect.
2. cover lightly with a powdered substance.
3. (usu. dust someone up) US informal beat up or kill.