Osaluste

Could you clarify what "osaluste" refers to? Is it an Estonian term meaning participation (or a related concept), a place or geographical name, a specific scientific or legal term, or a fictional/hypothetical concept? With the intended meaning or context, I can write a concise, neutral wiki-style article under 300 words. If you’d prefer, I can also draft a generic stub for a hypothetical concept named Osaluste.