Word Study
i.o.u
CIDE DICTIONARY
i.o.u, [phonetic, from I owe you.].
A paper having on it these letters, with a sum named, and duly signed; -- in use in England as an acknowledgment of a debt, and taken as evidence thereof, but not amounting to a promissory note; a due bill. Wharton. Story. [1913 Webster]
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