E. Cobham Brewer 1810–1897. Dictionary of Phrase and Fable. 1898.
Ry.
A Stock Exchange expression for any sharp or dishonest practice. It originated in an old stock-jobber, who had practised upon a young man, and, being compelled to refund, wrote on the cheque, “Please to pay to R. Y.” etc., in order to avoid direct evidence of the transaction.
