chas·sé 
(shă-sā)
(shă-sā)n.
A ballet movement consisting of one or more quick gliding steps with the same foot always leading.
intr.v. chas·séd, chas·sé·ing, chas·sés
To perform this movement.
[French, from past participle of chasser, to chase, from Old French chacier; see CHASE1.]