Definition and background:
A lively old dance in 4/4 time. Usually a country dance, popular in the Renaissance. The branle was danced by a group of many couples, some danced in a line and some in a circle.
For more information on the music term "Branle" check out these other resources:
Wikipedia - Glossary of Musical Terminology
Virginia Tech Multimedia Music Dictionary
ORB -- Medieval Music Glossary