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downspout

American  
[doun-spout] / ˈdaʊnˌspaʊt /

noun

  1. a pipe for conveying rainwater from a roof or gutter to the ground or to a drain.


downspout British  
/ ˈdaʊnˌspaʊt /

noun

  1. Also called: drainpipe.   downpipe.  a pipe for carrying rainwater from a roof gutter to the ground or to a drain

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of downspout

First recorded in 1895–1900; down 1 + spout