"Directional buttons" are buttons on a device that you can use to move or navigate in different directions, like up, down, left, or right. Full definition
At its base is a very usable controller, a wide dial with directional buttons mounted on top. (cnet.com)
Gamers complete levels using directional buttons on the left side of the screen to move, while actions, like jumping and shooting, are controlled by buttons on the right side. (adweek.com)
If you can't spot it on your map, try using the up and down directional buttons on your controller to change to the middle level. (shacknews.com)