ühisel

Could you clarify what you mean by "ühisel"? It could refer to different things, and I want to ensure accuracy for a wiki-style article. Possible interpretations include:

- An Estonian word meaning "shared" or "common," used in phrases or compounds (for example related to communal living or shared property.

- A specific proper noun (organization, project, place, or movement) named "Ühisel" or "ühisel."

- A fictional or specialized concept you want described.

If you provide the intended sense or context, I will write a concise, neutral wiki-style article (under 300 words).