[The name of a city in San Salvador.] In attrib. use: (see quots.).
1858. Simmonds, Dict. Trade, Sonsonate Balsam, a name given to two species of balsam of Peru, a black and a white.
1861. Bentley, Man. Bot., 529. Balsam of Peru is known in commerce under the names of Sonsonate or St. Salvador Black Balsam.
