Twirl
Part of speech: noun
Definition: A movement where one spins round elegantly; a pirouette.
Part of speech: verb
Definition: To perform a twirl. To rotate.
Birl
Part of speech: noun
Definition: In bagpiping, a type of grace note movement that quickly switches between low-A and low-G several times, producing a low rippling sound. [http://www.mcnabbs.org/andrew/comments/pipemusic/]
Part of speech: verb
Definition: To cause a floating log to rotate by treading on it. [http://en.wikipedia.org/wiki/Birling_(sport)]To spin.