Scottish Gaelic (Irish céilí): the gathering — music, story, and company held in one room; never a performance at people, always a room they share.
Scottish Gaelic ceilidh / Irish ceili, from Old Irish ceile (a companion, a visitor); the word for the visit itself became the word for the gathering the visit turned into.
A gathering of music, story, and company held in one shared room — never a performance done at people, always a room they hold together.