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Phrase(s): rack something up
1. Lit. to place something onto or into its rack. • You had better rack the billiard balls up when you finish this game. • Please rack up the balls. 2. Fig. to accumulate something; to collect or acquire something. • They all racked a lot of profits up. • We racked up twenty points in the game last Saturday. 3. Sl. to wreck or damage something. • Fred racked his new car up. • He racked up his arm in the football game.
McGrawhill's American Idioms And Phrasal Verbs