a small, white ball containing a chemical with a strong smell that keeps moths away from clothes

I've inherited a vintage fur coat, but it smells like mothballs.

The camphor in mothballs damages natural skins.

to stop work on an idea, plan, or job, but leaving it in such a way that you can start on it again at some point in the future

Six coal mines were mothballed in the hope that they could be reopened in a time of better economic conditions. 六个煤矿暂被封存，希望在经济形势转好的时候可以重开。