An old term used to refer to an evening party is "soiree".
Soirée is a French term from the word soir meaning evening. It is a noun translated as evening period or evening party.
A soiree
Soiree evening part with musical entertainment
soirée
A Soiree
The history is not perfectly clear, but the link below provides the official explanation by the Republican Party.
une soirée - an evening (party)
evening (party)
Soiree
Drum
e'en, even, evening