skerthdial. [? a. ON.skarð: see scarth n.1] A small watercourse. 1851Jrnl. R. Agric.Soc. XII. ii. 291 [Lincolnshire], The river..is augmented by numerous highland streams, ‘delphs and skerths’, on each side.Ibid. 302 A network of drains, dykes, eaus, and skerths.