Definition of rack up phrasal verb from the Oxford Advanced Learner's Dictionary

 

rack up

 phrasal verb
phrasal verb
 
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Phrasal Verbs
(especially North American English) to collect something, such as profits or losses in a business, or points in a competition The company racked up $200 million in losses in two years. In ten years of boxing he racked up a record 176 wins.
See the Oxford Advanced American Dictionary entry: rack up