bal means “ball” | MotiTan French Dictionary

More examples

Elle a rencontré son mari au bal.

She met her husband at the ball.

A social evening centered on organized dancing, often with dressed-up guests and a planned setting.

soirée: An evening gathering where people come together to spend time.
fête: A lively gathering held for a celebration or annual event.

Fête où l'on danse, souvent organisée de manière formelle.

French borrowed bal from Italian ballo, which developed from Late Latin ballare, 'to dance'.

Bal often suggests a more formal or traditional event than the broader terms fête or soirée.