"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").
"to fall in cascades," 1702, from cascade (n.). In early 19c. slang, "to vomit." Related: Cascaded; cascading.
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