- 掸净，掸去，拭去，擦净，除去或刷净(某物上)的灰尘：
She dusted off her bed and lay down.
她掸干净床，然后躺在床上休息。
He dusted every bit of dirt off his furniture.
他把家具上的污物都擦掉了。
- 成粉末状剥落：
The door paint dusted off.
门上油漆成粉末状剥落。
- [口语]把(长期不用的东西)备好待用，预备再用，(搁置一段时间后)再使用，将(长期搁置或荒疏的东西)重新使用(或温习，练习)：
Dust off your old skills and prepare for new responsibilities.
把你荒疏已久的技艺重新练好，准备担负新任务。
We'll have to dust off our English if we're going to visit New York.
如果我们要访问纽约，我们得重温我们的英语。
- 再介绍；再提出；再引入；重新采用：
We'll dust off an old scheme that has been lying on the shelf for months.
我们将重新采用束之高阁多月的一个旧计划。
- [俚语]抛弃，丢弃：
His wife was old and he dusted her off.
他妻子老了，他把她抛弃了。
- [俚语]杀死；击败，使失败；狠揍，痛打：
The gang of terrorists dusted off the policeman.
那帮恐怖分子把那名警察痛打了一顿。
- [美国俚语]【棒球】(投手)故意向(击球手)投威胁球，投近身球：
The pitcher dusted off the opponent.
那投手故意向击手身上投威胁球。