Moving a controller like a game pad or joystick in slight intermittent nudges. Used to avoid moving too far in a game with overly responsive character or vehicle movement. The opposite approach to blindly charging in, thrusters on full. Might be needed to get a character right to the edge of a ledge in a platform game before making a particularly difficult jump.
Dude, you've got to use some feathering to get that ship in to the landing pad or you're going to crash.