Cascade
来自Big Physics
mid 17th century: from French, from Italian cascata, from cascare ‘to fall’, based on Latin casus (see case1).
wiktionary
From French cascade, from Italian cascata, from cascare(“to fall”), from Vulgar Latin *casicāre, from casus, verbal noun of cadō, ultimately from Proto-Indo-European *ḱh₂d-(“to fall”).
etymonline
cascade (n.)
"a fall or flow of water over a cliff, a waterfall," 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" (from PIE root *kad- "to fall").
cascade (v.)
"to fall in cascades," 1702, from cascade (n.). In early 19c. slang, "to vomit." Related: Cascaded; cascading.
