1. To close and pay for one's tab at a restaurant or bar. I think we've had enough to drink. Let's tab out and head home.
2. In Microsoft Windows, to switch from one's current window to another by pressing the keys ALT+TAB. Every time I try to tab out of the game, the computer gets really laggy or crashes altogether.
3. In PC gaming, to switch unintentionally to a window other than that of one's current game. The game was tabbing out whenever the mouse scrolls to my second monitor, so I've had to install software that disables that functionality during gameplay.
4. To cause a computer user to switch unintentionally from the window of their game to a different one. In this usage, a noun or pronoun can be used between "tab" and "out." These blasted Windows notifications always tab me out of CS:GO at the worst possible moments.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.