The Collaborative International Dictionary of English v.0.48:
Stound \Stound\, n. [AS. stund; akin to D. stond, G. stunde, Icel. stund.] 1. Hour; time; season. [Obs.] --Chaucer. [1913 Webster] 2. A brief space of time; a moment. [Obs.] --Chaucer. [1913 Webster] In a stound, suddenly. [Obs.] --Chaucer. [1913 Webster]