[Q] Can you identify this part?

Opened up an old PC on a stick to see what I could do to improve wireless signal and ended up breaking off what appears to be a part of the wifi antenna however I have no idea what it is correctly called, a few google searches and I come up short. I want to know what the part is called so that hopefully I can find out how to reattach it.

The part looks like a gold color pin that pushes in, sort of like a micro plunger. When the case is put back together there is a metal plate on the case that makes contact with this pin to create an antenna of sorts.

I would just solder it back on but I can't make out any metal contact left to solder to on the spot where it broke off from.