cascade (n.)youdaoicibaDictYouDict[cascade 词源字典]
1640s, from French cascade (17c.), from Italian cascata "waterfall," from cascare "to fall," from Vulgar Latin *casicare, frequentative of Latin casum, casus, past participle of cadere "to fall" (see case (n.1)).[cascade etymology, cascade origin, 英语词源]
cascade (v.)youdaoicibaDictYouDict
1702, from cascade (n.). In early 19c. slang, "to vomit." Related: Cascaded; cascading.