Obs. [f. SPY sb. or v. + -ERY. Cf. ESPIERY.] The fact or condition of being a spy; the action of spying; espionage.
c. 1588. Parsons, in J. Morris, Troubles Cath. Forefathers, 2nd Ser. (1875), 312. After I had read over and perused the whole story of his living in England, his examinations, confessions, fictions, accusations, slanders, spiery, recantation and the like.
1600. W. Watson, Decacordon (1602), 132, marg. This good Cardinall [was] most spitefully infamed by these three Priests, (though al in one predicament of spierie if any were).