Definition of chalk up phrasal verb from the Oxford Advanced American Dictionary

 

chalk up

 phrasal verb
phrasal verb
 
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Phrasal Verbs

chalk up something

(informal)
 
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to achieve or record a success, points in a game, etc. The team chalked up their tenth win this season. As a Hollywood actor he has chalked up a number of box-office successes. They will have chalked up 40 years of marriage this summer.
See the Oxford Advanced Learner's Dictionary entry: chalk up