run

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run

1. verb, informal To leave or depart, especially very quickly or suddenly. Sorry, I've got to run. I'll call you tomorrow to go over the project in greater detail. A: "Do you want another drink?" B: "No, I'd better run. I have an early start tomorrow."
2. noun, slang A period of frequent and extended use of a particular drug; a drug binge. Usually used in combinations. It turns out he had been on a cocaine run for nearly three months straight, and he had spent almost all of their savings during that time. I nearly died on that last heroin run. This time, I'm doing whatever it takes to get clean.

run its course

To progress along something's natural course and conclude at its normal pace. (Used especially in reference to illness and disease.) Unfortunately, there's no treatment for this kind of infection. You just have to let it run its course. Don't stress about Susan's new boyfriend. I'm sure it's just a summer thing—it will run its course before she goes back to school. The president said he would rather let the economy run its course than try to manipulate it with a stimulus package.
See also: course, run

the runs

slang A case of diarrhea. I get the runs when I drink too much coffee, so I tend to avoid it altogether. Something I ate has been giving me the runs all day.
See also: run
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

run

1. n. a session or period of time spent doing something; a period of time when something happens. The market had a good run today.
2. tv. to transport contraband, alcohol, or drugs. Harry the Horse used to run booze during prohibition.
3. n. an act of transporting contraband. Four soldiers were killed during a run.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.

run

/take its course
To follow its natural progression or development: Should we let the illness run its course?
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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