1933, American English, from U.S. president Herbert C. Hoover (1874-1964), who was in office when the Depression began, + common place-name ending -ville. Earlier his name was the basis of Hooverize "economize on food" (1917) from his role as wartime head of the U.S. Food Administration.

proprietary name of dimenhydrinate, an anti-nausea drug, 1949. Said to have been developed originally as an anti-allergy drug at Johns Hopkins.

central nervous system stimulant, a proprietary name (Ciba Ltd., originally in Switzerland) for the drug methylphenidate hydrochloride. It was trademarked 1948, years before the drug itself was marketed.

1995, trade name for a powerful insomnia drug.

1998, proprietary name of drug manufactured by Pfizer company.

commercial motor oil additive, probably an initialism (acronym) of scientifically treated petroleum. As the street name of a type of psychedelic drug, attested from 1967.

1965, proprietary name (trademark by Wm. H. Rorer Inc., Ft. Washington, Pennsylvania, U.S.A.) of methaqualone used as a sedative drug. The name is said to be based on quiet interlude.

brand name of a type of food blender, 1944, manufactured by Waring Products Corp., N.Y., U.S.

in various food preparations, especially peach Melba (by 1905) and Melba toast (by 1913) is in honor of Nellie Melba, stage name (based on her hometown of Melbourne, Australia) of Australian-born operatic soprano Helen Mitchell (1861-1931).