Wiktionary
vb. 1 (context snooker billiards cue sports English) to arrange in a rack 2 (context idiomatic English) to gain (points etc.; in a game or sport) 3 (context idiomatic English) to acquire, to gather together. 4 (context idiomatic English) to defeat severely, to thrash
WordNet
v. gain points in a game; "The home team scored many times"; "He hit a home run"; "He hit .300 in the past season" [syn: score, hit, tally]
place in a rack; "rack pool balls"
defeat thoroughly; "He mopped up the floor with his opponents" [syn: worst, pip, mop up, whip]
supply a rack with feed for (horses or other animals)
Usage examples of "rack up".
If you blow up a federal courthouse, the feds build two to take its placeone to replace the blownup one and one just to rack up each and every black ass that gets busted through the front door.
Julian departed partway through the service, to check on the guard he had posted along the strand, someone having pointed out that a would-be assassin could rack up a high score with that many of us together in one small space.
Ah, it is noon now, check-out time, and I can hear the clang of the cash register across the patio as they rack up another $7 to Senor Thompson, the gringo with the messy room.
The smaller, bloodied beast had charged first, bringing his rack up and under.
There was barely time to say good-bye before we had to rack up and strap in.
Watching the Japanese rack up losses, Waterhouse wonders if anyone in Tokyo has bothered to break out the abacus and run the numbers on this Second World War thing.
I left the car where he told me, then walked back between Tiger stadium and the basketball arena where Pistol Pete Maravich used to rack up forty-four points a game.
If you blow up a federal courthouse, the feds build two to take its place-one to replace the blown-up one and one just to rack up each and every black ass that gets busted through the front door.