a method or a type of behaviour that involves using force and threats to make people do what you want

Police resorted to strong-arm tactics to break up the protest. 警方采取强制手段驱散抗议人群。

to use force and threats to make people do what you want

We never strong-armed anybody. I told people about the website and they could take it or leave it. 我们从不威逼任何人，我跟他们介绍这个网站，他们可以来了解也可以不来。