drainage

noun

drain·​age ˈdrā-nij 

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

Lymphatic drainage is next, followed by boosters tailored to patrons' needs based on Vamont's five different facials. —Lawrence Yee, People.com, 1 May 2025

Western fireflies face unique environmental challenges Our work joins a growing chorus of scientific observation focused on western fireflies, which pop up across the arid landscape near temporary wetlands, marshes, drainages, desert rivers and other water sources. —Owen Martin, The Conversation, 1 May 2025

Stay informed and follow these tips from the NWS to ensure safety during heavy rainfall: Beware of rapid water flow: During heavy rain, avoid parking or walking near culverts or drainage ditches, where swift-moving water can pose a serious risk. —Bay Area Weather Report, Mercury News, 30 Apr. 2025

The dollars could be used to fund things like sidewalk construction and maintenance, hiking and biking trails, drainage improvements, and street lights and traffic control improvements. —Eleanor Dearman, Fort Worth Star-Telegram, 23 Apr. 2025

Word History

First Known Use

1652, in the meaning defined at sense 1

Kids Definition

drainage

noun

drain·​age ˈdrā-nij 

1

a

: the act of draining

b

: something drained off

2

: a method of draining

also : a system of drains

Medical Definition

drainage

noun

drain·​age ˈdrā-nij 

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)