Jálap. n.s. [jalap, French; jalapium, low Latin.]
Jalap is a firm and solid root, of a wrinkled surface, and generally cut into slices, heavy and hard to break; of a faintish smell, and of an acrid and nauseous taste. It was not known in Europe 'till after the discovery of America, and had its name jalapium, or jalapa, from Xalapa, a town in New Spain, in the neighbourhood of which it was discovered; though it is now principally brought from the Madeiras. It is an excellent purgative in all cases where serous humours are to be evacuated. Hill's Mat. Med.