drain·​age | \ˈdrā-nij \

Definition of drainage 

1 : the act, process, or mode of draining also : something drained off

2 : a device for draining : drain also : a system of drains

3 : an area or district drained

Examples of drainage in a Sentence

Recent Examples on the Web

The drainage in the Benson Boulevard area, for example, is more than three decades old, McCarthy said. Devin Kelly, Anchorage Daily News, "Spenard sinkhole signals a looming crisis over Anchorage’s aging drainpipes," 7 June 2018 Complicating the calculus is that Jefferson has other needs: drainage, sewerage and streets among the most pressing. Drew Broach, NOLA.com, "January freeze, pressure drop expose precarious nature of East Jefferson water system," 23 May 2018 That drainage is sitting at about 30 percent of normal moisture, Smith said. Brandon Loomis, azcentral, "After dry winter, Colorado River forecasters look for 6th-driest runoff year," 4 Apr. 2018 According to The Arsh Group, those who have provided input so far have said land use, drainage and sprawl are main issues, as is a desire to preserve the agricultural history and heritage of the region. Karen Caffarini, Post-Tribune, "Connecting communities pushed as Lake County officials eye unincorporated land annexation," 26 Jan. 2018 Ancient settlements were usually surrounded by fortifications or drainage ditches. Brigit Katz, Smithsonian, "A Heat Wave is Revealing Centuries-Old Sites in Wales," 11 July 2018 The natural area will extend along a drainage ditch from the campus through what's now Pittman's property, which will be jointly accessible to the school and residents. Chris Sikich, Indianapolis Star, "University High School sells land south of 116th Street campus to Carmel developer," 11 July 2018 While investigating signs of trespassing into municipal properties, the officers heard pellet gun shots on the other side of a steep drainage ditch. Houston Chronicle, "Game warden field notes," 1 July 2018 Bizarrely, Stern’s firm placed a drainage ditch along the sidewalk. Inga Saffron, Philly.com, "These two new Philadelphia apartment buildings are civilizing the Vine Street Expressway," 4 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'drainage.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of drainage

1652, in the meaning defined at sense 1

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Statistics for drainage

Last Updated

5 Nov 2018

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Time Traveler for drainage

The first known use of drainage was in 1652

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More Definitions for drainage



English Language Learners Definition of drainage

: the act or process of draining something : the act or process of removing water or liquid from a place or thing


drain·​age | \ˈdrā-nij \

Kids Definition of drainage

: the act or process of removing a liquid Drainage of the flooded area has begun.


drain·​age | \ˈdrā-nij \

Medical Definition of drainage 

1 : the act or process of drawing off fluids from a cavity or wound by means of suction or gravity

2 : a process of releasing internal conflicts or pent-up feelings (as hostility or guilt)

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More from Merriam-Webster on drainage

Spanish Central: Translation of drainage

Nglish: Translation of drainage for Spanish Speakers

Britannica English: Translation of drainage for Arabic Speakers

Britannica.com: Encyclopedia article about drainage

Comments on drainage

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