sissonne
noun
sis·sonne
variants or sissone
sə̇ˈsän,
-ˈsōn,
-ˈsȯn
plural -s
: a ballet step in which the legs are spread in the air and closed on the descent
Word History
Etymology
after François César de Roussy, count of Sissonne, 17th century French nobleman credited with the invention of the step