Stimming is referred to as the repetitive motion of the body or objects frequently seen in persons with autism. It can be hand flapping, rocking or spinning. I mention it here under listening, as one of the instances when stimming can be observed is when a child is overstimulated, as in not able to listen in a classroom because too much is going on.
Amythest Schaber who has produced several videos on YouTube (under the moniker “Ask an Autistic”) provides an in-depth description of stimming, from the point of view of a person with autism.