Obs. rare. Also 5 sugh. [repr. OE. sulh plow: see SULL sb.] A plowshare.
143250. trans. Higden (Rolls), VII. 165. Sche passede by fulle stappes the ix. cultres or sughes with owte eny hurte.
1598. Florio, Vómere, the sough or ploughshare or culter.
1688. R. Holme, Armoury, III. 333/2. The Sough [of a plow] is that as Plows into the ground.