After last night's episode, it seems pretty clear that Cold Harbor...

Is a reference to Gemma's infertility. "Cold Harbor" -- as in, an inhospitable womb. Whether or not that has any bearing on what is actually in the Cold Harbor room, I have no idea. It could just be a reference to the overall Gemma project and the fact that they used her miscarriage to manipulate her into joining. But the intended meaning/origin of the name seems pretty clear to me.