Moving Target Hold
Also: Mover
Using marks in the reticle to hold the correct lead on a target moving across your front, turning a swinging shot into a repeatable reference.
A moving target hold takes the abstract idea of leading a target and pins it to a concrete spot in your sight picture. Instead of swinging through and guessing, you calculate the needed target lead in mils or minutes and then hold that many units of the reticle ahead of the target, often using the horizontal stadia or a dedicated lead dot. The faster the mover and the longer the time of flight, the more reticle the hold consumes.
Two methods exist: tracking, where you swing with the target and break the shot while maintaining the lead, and trapping, where you hold a fixed lead point and fire as the target arrives at it. Either way, watching trace and impact tells you whether your hold was ahead or behind so you can adjust the next one. A clean moving target hold turns a chaotic situation into a measured, correctable problem.