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A phrase used to approximate an amount. It typically follows a number or quantity of some kind. A: "How many more chairs do you think we'll need?" B: "Probably 20 or so."
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
Approximately, especially alluding to a number, as in Four hundred or so guests are invited. [Late 1500s]
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.
...or soused after a number, an amount, etc. to show that it is not exact: He stayed for a week or so. ♢ Take a kilo or so of sugar...
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