Twirler (noun)

A person who twirls, especially a person who twirls a baton or other object as part of a performance or show.

Origin:

Twirl + -er.

Examples:

1. The twirler was a skilled performer.
2. The twirler was the star of the halftime show.
3. The twirler's routine was a highlight of the parade.
4. The twirler's skill with the baton was impressive.
5. The twirler's performance was met with applause.