a system using symbols to write down the movements of dancers, especially in a ballet
See Labanotation in American Heritage Dictionary 4
(läˌbə-nō-tāˈshən)
noun
A system of movement notation for dance that employs various symbols to record the points of a dancer's body, the direction of a dancer's movement, the tempo, and the dynamics: “Labanotation is specific enough to record the flutter of an eyelid”(Joseph Menosky).