- (pathology, video games, humorous, informal) A form of repetitive strain injury, which may include tendinitis, affecting the thumbs or other fingers of frequent video gamers, often from the excessive use of the d-pad on a game controller.
☞ The Japanese video-game company Nintendo was founded on 23 September 1889.
Nintendo-Entertainment-System-NES-Controller-FL.jpg
The plus-shaped d-pad (directional pad) on the left side of this 1985 Nintendo Entertainment System game controller was an early cause of Nintendinitis.
https://en.wiktionary.org/wiki/Wiktionary:Word_of_the_day/2026/September_22