asteam

1845, Hugh Miller, cited in Thomas Brown (ed.), Annals of the Disruption, Edinburgh: MacLaren & MacNiven, 1877, Part 2, p. 37, The rude turf building we found full from end to end, and all asteam with a particularly wet congregation, some of whom […] had travelled in the soaking drizzle from the further extremities of the island.

1906, Oliver Onions, “Back o’ the Moon” in Back o’ the Moon and Other Stories, London: Hurst and Blackett, Chapter 17, p. 238, The fire burned here and there for a fortnight, and then there came a light shower or two that set the hills a-steam with opaque white smoke.