IOU
noun
1.
an informal debt instrument; representing `I owe you''
Origin
From the pronunciation of "I owe you". Attested since at least 1618.
Related words
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.