slang. Also stumor. [Of unknown origin.] A forged or dishonored cheque; a counterfeit bank-note or coin; a sham.
1890. R. Marsh, in Blackw. Mag., June, 793/1. Stumer is slang for a worthless cheque.
a. 1897. Sporting Times, in Barrère & Leland, Slang Dict., s.v., My collection of writs, pawn tickets, unreceipted bills, stumers [etc.].
1897. Hall Caine, Christian, IV. iv. 376. A thickun? Oh, that was a sovereign, twenty-five pounds a pony, five hundred a monkey, flash notes were stumers.
1911. A. G. C., Through a College Keyhole, 13. For Maeterlincks bird was a stumor, Ive heard.
1912. L. Williams, in Daily News, 19 Dec., 7/4. I did pass a bad florin, guvnor, but I did it innocent. I didnt know it was a stumer.