rack up

verb racks up · racking up · racked up

1. ambitransitive To arrange in a rack. At the start of the game, the referee racks up the red balls.
2. idiomatic To gain (points etc.; in a game or sport), to accumulate. Chelsea racked up another 3 points at home to Bolton.
3. idiomatic To acquire, to gather together. By the age of 18, he had already racked up thousands of dollars in debt.
4. idiomatic To defeat severely, to thrash.
5. To collect one's chips and cash out.
6. To attribute, chalk up. A number of times I heard Bruce say, in passing, "I just don't see why everyone has to be labeled. I just don't think words like homosexual — or gay — do anything for anybody." And I would hold my counsel and rack it up to age.