eläköön
Eläkän is a term with limited attestation in widely available reference works, and it does not have a universally recognized definition. Because it appears infrequently in public sources, its precise sense depends heavily on context. There is no established etymology or canonical usage that applies across domains.
In possible Finnish-language contexts, the form resembles patterns seen in noun formations or proper-name constructions, but
Given the absence of authoritative references, eläkän does not have a formal entry in major encyclopedias.
In summary, eläkän is a term whose meaning is not established independently of context. If you can