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1. To acquire or accumulate a large number or amount of something. A noun or pronoun can be used between "rack" and "up." The team quickly racked up 35 points in the first 20 minutes of the game. You have to rack customer reward points up for years before you can actually use them for something worthwhile.
2. To place billiard balls in a shaped rack to set up for a new game. A noun or pronoun can be used between "rack" and "up." I'll go get the pool cues while you rack the balls up. Rack up! I'll break.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
Accumulate or score, as in Last night's episode of that new sitcom racked up at least fifteen points in the ratings. [Colloquial; mid-1900s]
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. To accumulate or score a number of something: The home team racked up 64 points. Our team did badly in the first half, but in the second half we really racked the points up.
2. To set up billiard balls for a game of billiards or pool by placing them in the rack: He racked up the balls at the start of the game. She picked up the balls, racked them up, and cued off.
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
rack something up
1. tv. to accumulate something; to collect or acquire something. We racked up twenty points in the game last Saturday.
2. tv. to wreck something. He racked up his arm in the football game.
in. to become alcohol intoxicated. (see also racked (up).) Let’s go down to the tavern and rack up.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.