IOU


Meaning of IOU in English

/ ˌaɪ əʊ ˈjuː; NAmE -oʊ-/ noun

( informal ) a written promise that you will pay sb the money you owe them (a way of writing 'I owe you') :

an IOU for £20

••

WORD ORIGIN

late 18th cent.: representing the pronunciation of I owe you .

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.