Devil stick (also Devil Stick, devilstick, devil-stick, Rhythm Stick, etc., or plural forms) manipulation is a form of gyroscopic juggling, or equilibristics and is generally considered to be one of the 'circus arts'. Sometimes called "devil-sticking" other terms often used are: "twirling", "sticking" and "stick juggling".
A "set" of devil sticks is made up of three pieces - the baton and two control sticks - but it will often be called a "pair of sticks".
Typically if a center stick is not tapered (i.e. a straight dowel or rod) and possesses tassels at its end, then it is known as a "Flower Stick" (as the tassels, when the stick is spun, will twirl outwards and resemble an open flower). This term is also now used to describe a straight center stick with any weights (not just tassels) at its end and sometimes refers to hybrid sticks which are both tapered and have weights. Tapered sticks without end weights are known simply as Devil Sticks. Flower sticks can also be properly called "Devil Sticks" as that is the more general term.