In gambling, a tap out is a situation where a player loses their entire bankroll.
Before each hand, players in the game decide what amount of money they are willing to play with or spend – which is the bankroll. If a player taps out, it means that they have lost their entire bankroll. This means that they cannot continue to play the game. So, if a player taps out, they are done with their gambling experience for the duration of the games. Losing one’s money is the least favorable result in poker and other gambling games. An experienced player knows how to avoid such situations, and not tap out or lose large sums of money in gambling games.