caustico

"Eh?" said Aaron; "what -- has the caustico that was intended for the frontiers of Belgium been clapped by mistake on the broad Pays Bas?"

Tom Cringle's Log Michael Scott 1812

Now was the time to clap on the blister, but he repeatedly tore it off, so that at length we had to give it up for an impracticable job; and Tailtackle, whom I had called from his pallet, where he had gone to lie down for an hour, placed the caustico, as the Spaniards call it, at the side of the bed.

Tom Cringle's Log Michael Scott 1812