A "single-pivot" refers to a type of mechanical system or design where a single point acts as the axis of rotation. This means that all movement occurs around this one point, allowing for efficient motion and control. Single-pivot designs are commonly found in various applications, including bicycles and certain types of machinery. In the context of bicycles, a single-pivot suspension system uses one main pivot point to connect the rear triangle to the frame. This design simplifies the mechanics and can provide a smooth ride, making it popular among mountain bikers and casual riders alike.