My Irish language dictionary defines "ceili" (with fadas on "e" and second "i") as:
1. Friendly call, visit.
2. Social evening
3. Irish dancing session.

In Ireland in the 40s and 50s we used to talk about "going to Mickey's for a ceili", or " Who'll that be at the door, it'll be Mickey on his ceili". (Actually doors were never locked and nobody ever knocked; it was a question of "Don't bother to knock, just lift the latch and walk right in me boys"!)