drainpipe
Word family
Synonym discussion
Sense: noun/1
A drainpipe is a pipe attached to the outside of a building that carries rainwater or waste water down to a drain. A downpipe and a downspout mean the same thing but differ by region: downpipe is the standard British term, while downspout is the American equivalent. Both refer specifically to the vertical section running from roof to ground, whereas drainpipe can also refer to underground pipes. A waste pipe is broader — it carries dirty water from sinks, baths, or washing machines, and may be inside the wall rather than on the outside. A gutter is different: it is an open channel along the edge of a roof that collects rainwater and feeds it into the drainpipe. For example, you would say 'The gutter was overflowing and the drainpipe below it was blocked,' not 'The drainpipe on the roof edge.'
Etymology
Formed from 'drain' (from Old English drēahnian, meaning 'to strain or filter out liquid') and 'pipe' (from Latin pipa, 'a tube'). The word originally referred only to a pipe for carrying away water. The trousers sense emerged in the 1950s, comparing the tight, straight-legged style to the narrow cylindrical shape of a drainpipe.
First known use
1857
1857, in the meaning defined above