barn dance

WordReference Random House Unabridged Dictionary of American English © 2025

barn′ dance′, 

1. a social gathering, originally held in a barn, and including square dances, round dances, and hoedown music.
2. any party featuring country dances, dress, music, etc.
• 1890–95, American.

Collins Concise English Dictionary © HarperCollins Publishers::

barn dance noun

1. a progressive round country dance
2. a party with hoedown music and square-dancing
3. a disco or party held in a barn