"An alcoholic solution of soap (or oleic acid) and camphor with some added essential oils; soap liniment; (also) a preparation made from this, especially by mixing with laudanum; now archaic . In extended use: ( United States regional ) any medicine; alcohol", Mid 17th cent.; earliest use found in Thomas Browne (1605–1682), physician and author. From post-classical Latin oppodeltoch, probably coined by Paracelsus; perhaps from ancient Greek ὀπός vegetable juice; for the ending, perhaps compare post-classical Latin nostoch.[opodeldoc etymology, opodeldoc origin, 英语词源]