kupruilu

Could you clarify what kupruilu refers to? I want to ensure the article is accurate and neutrally written. Some helpful details would be:

- The field or context (cultural practice, language term, science, geography, fiction, etc.)

- The language or region it’s associated with (e.g., Finnish, Estonian, etc.)

- A brief definition or any reliable sources you want cited

- Whether you want a concise stub or a fuller entry with sections like definition, etymology, usage, history, and related terms

With that context, I can generate a concise, neutral wiki-style article of under 300 words. If you don’t have specifics, I can also draft a neutral stub outline and fill in details once you choose the intended meaning.