What's "one-way" mean and when's it used?

Native speaker’s answer
Rebecca
Here, "one-way" is a compound adjective that means moving in one direction. In this context, it refers to having a single path or viewpoint. It's commonly used for traveling and giving directions. But it can be used more metaphorically like here too. Ex: I got a one-way ticket to Bali. I'm not sure when I'll come back. Ex: I'm on a one-way path for my future plans. Study for seven years, then be a doctor.