It is a mental concept, Bobert, beloved to the ego. It is defined as scoring a victory over someone or something...another person, a group of people, a system, a slot machine, whatever. By scoring the victory you presumably are now in a better position, a more powerful position, than you were before. This is encouraging to the ego, because it is perpetually insecure about its position. No amount of winning will ever fully satisfy this basic insecurity, unfortunately. That's why you see winners at casinos gambling their winnings away, and military conquerors perpetually reaching one step too far in their endless search to expanding their "winnings", and achieve....what? The anser to that, they do not know.