Noun
English Wikipedia has an article on:thumbstickWikipedia
thumbstick (plural thumbsticks)
(video games) A small joystick, generally part of a larger game controller, that can be operated with the thumb.
Bad guys run at your character in silhouette, and you can use the thumbstick to kill them, Tarantino-style. Source: Internet
The new pass-rush controls can be pulled off entirely with the right thumbstick on a console controller, keeping it in line with many of the movement-based changes over the past few years. Source: Internet
It didn't say anything about the thumbstick version in the current update. Source: Internet
Moving the thumbstick too quickly will force the ball to the right. Source: Internet
You use the left thumbstick to wipe your hand over the bird clearing away accumulated corruption like so many thistle burrs picked out of corgi fur. Source: Internet
Same goes for right on the d-pad and the left thumbstick. Source: Internet