呢 meaning "where", is it possible?
I don't think so as a native speaker.
呢 is only a modal particle while it is pronounced as &quot;ne&quot; in Pinyin.
You can use it for:

Interrogative mood. Use it at the end of a sentence. Sometimes you can use it for probing somebody.

For example:

你在做什么呢？ What are you doing?

You can remove 呢; then you are not probing.
Another usage:

我的杯子呢？ Where is my cup?

In my view, this is an elliptical sentence. It should be 我的杯子在哪呢？. And 在哪 means WHERE.
哪 is also has interrogative mood. So you can remove 呢 if there is 哪. (or keep it is also ok)
You must keep 呢 if you use the elliptical sentence. Because there is no interrogative mood in the rest of the sentence.

Emphatic mood. Use it at the end of a sentence.


我在跟你说话呢！ I am talking to you!


Something or action is happening. Use it at the end of a sentence.


我在学习呢。 I am studying right now.


Indicating a pause.


现在呢，已经完全不一样了。 Nowadays, well it's totally changed.