pirouetting

from The Collaborative International Dictionary of English v.0.48

Pirouette \Pir`ou*ette"\, v. i. [imp. & p. p. {Pirouetted}; p.
   pr. & vb. n. {Pirouetting}.] [F. pirouetter.]
   To perform a pirouette; to whirl, like a dancer.
   [1913 Webster] Pirry