IOU

1.
a written acknowledgment of a debt, especially an informal one consisting only of the letters IOU, the sum owed, and the debtor's signature.
Also, I.O.U.
Origin
1610–20; representing I owe you
British Dictionary definitions for i. o. u
IOU
 
n
a written promise or reminder to pay a debt
 
[C17: representing I owe you]

Collins English Dictionary - Complete & Unabridged 10th Edition
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i. o. u in Culture

IOU definition


Abbreviation for “I owe you.” An IOU is a written statement of a borrower's obligation to pay a debt.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Slang related to i. o. u

IOU

noun

A promise to pay; written acknowledgment of a debt : had won $800,000, in cash, not IOUs (1618+)


Dictionary of American Slang
Copyright © 1986 by HarperCollins Publishers
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Related Abbreviations for i. o. u

IOU

a note of debt (from "I owe you")
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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