rack up verb6 •To gain (points etc.; in a game or sport), to accumulate.Chelsea racked up another 3 points at home to Bolton. •To acquire, to gather together.By the age of 18, he had already racked up thousands of dollars in debt. •To arrange in a rack.At the start of the game, the referee racks up the red balls.If you rack up, I'll break. •To attribute, chalk up. •To defeat severely, to thrash. •To collect one's chips and cash out. formsracked up · racking up · racks up