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

Not only do slopes destabilize compost bins and piles, making compost more likely to tumble around, but uneven surfaces can also create drainage issues, resulting in soggy compost and an unpleasant odor. —Lauren Landers, Better Homes & Gardens, 30 June 2025

Then apply enough water to run from the drainage holes in the bottom of the plant’s container. —Tom MacCubbin, The Orlando Sentinel, 28 June 2025

New Orleans, much of which lies below sea level, relies on this elaborate system of levees, pumps and drainage canals. —Kati Weis june 27, CBS News, 27 June 2025

Provide even moisture, good drainage, and protection from hot afternoon sun. —Kim Toscano, Southern Living, 27 June 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)