noun
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the process or a method of draining
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a system of watercourses or drains
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liquid, sewage, etc, that is drained away
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of drainage
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Drainage pipes, fiber cables and piles of sand were left blocking a lane of traffic for more than a year, while the 26-foot deep hole filled with water.
From The Wall Street Journal • Oct. 29, 2025
Drainage in Belfast was originally designed by Victorian engineers as a combined system, with both sewage and storm water flowing through the same pipes.
From BBC • Feb. 27, 2025
Drainage problems cost Santa Anita racing days and the subsequent installation of another brand of synthetic failed to perform adequately under extreme temperatures.
From Washington Times • Jun. 1, 2023
During his 35-year tenure as a commissioner for King County Drainage District 5 and 5A, Allan Thomas was responsible for estimating the district’s drainage maintenance costs so the county auditor could set and assess taxes.
From Seattle Times • Jan. 11, 2023
The Drainage Basin of the Colorado River has an area of 265,000 square miles.
From Our National Defense: The Patriotism of Peace by Maxwell, George Hebard
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
