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Related to set by: Conventional set
To save or reserve something, especially money, for future use. A noun or pronoun can be used between "set" and "by." If you can set by even $100 a month, it will go a long way toward paying off the loan. Don't throw away all that scrap metal—we can set it by for our next project.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
Put aside for future use, as in She had shelves and shelves of cans set by for some imagined food emergency. [Late 1500s] Also see set aside, def. 1; set store by.
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.
To reserve something for future use: It is wise to set food and money by in case of a future emergency.
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.