Obs. rare–1. [Prob. related in some way to STEP sb. and v.; cf. STOPEL.] ? A row of stepping-stones.
1611. Coryat, Crudities, 89. [Vercellis] hath many faire streets through which diuers riuers doe runne, with many stupples to passe ouer from one side of the street to the other as in Sarisbury.
