einblína

I want to provide an accurate wiki-style article, but I’m not sure what “einblína” refers to. Could you clarify whether einblína is:

- a real term in a specific language (and if so, which language and meaning),

- a place, person, or organization,

- a cultural or historical concept,

- or a fictional term from a particular work or world?

If you have a source or context, sharing it will help me write a concise, neutral article under 300 words.