novocain (n.)youdaoicibaDictYouDict[novocain 词源字典]
also novocaine, 1905, originally a trademark name for procaine (by Lucius & Brüning, Hoechst am Main, Germany), from comb. form of Latin novus "new" (see new) + -caine, abstracted from cocaine. As a local anaesthetic, it began as a substitute for cocaine.[novocain etymology, novocain origin, 英语词源]