Elevation
Vertical adjustment on a scope, or the up/down correction needed for distance. Dialed via the scope's top turret; runs out at the scope-elevation ceiling.
For known distances, you dial elevation. Turn the top turret up by the predicted drop, hold the crosshair on target, send it. For unknown or rapidly changing distances, holding over with reticle stadia is faster than dialing.
Verify your elevation tracking before trusting it. Shoot a tall target, dial known increments, and confirm the impacts move where they should. Scope turrets that don’t track honestly are a chronic source of mystery misses.