What does drain mean?
"Drain" functions as both a noun and a verb in English. As a noun, it refers to a channel, pipe, or conduit that carries away waste water or other unwanted liquid, as in a kitchen sink drain or a storm drain. As a verb, it means to cause liquid to flow out of or away from something, but it also has a powerful figurative sense: to gradually deplete resources, energy, or emotion. Someone can be "drained" after a long day, and money can be described as going "down the drain" when it is wasted. The word appears frequently in everyday speech and writing, from plumbing instructions to discussions about economic hardship. Its figurative uses are well-established: "brain drain" describes the emigration of skilled workers, while "a drain on resources" denotes a persistent burden. Because it bridges the literal and metaphorical so naturally, "drain" remains an essential and versatile word for describing both water management and depletion of any kind.
A channel or pipe that carries away waste water or other unwanted liquid.
"Leaves had blocked the drain outside the front door."
Often used with modifiers specifying location or function, e.g. 'storm drain', 'sink drain'.
Something that continuously depletes resources, money, or energy.
"The old building became a serious drain on the charity's finances."
To cause liquid to flow away from or out of something.
"Drain the pasta thoroughly before adding the sauce."
To exhaust or gradually deplete someone's physical or emotional strength.
"Caring for her elderly parents drained her emotionally."
Standard plural; commonly used when referring to multiple drainage channels or pipes.
"All the drains on this street were cleaned last week."
The phrase 'brain drain' was coined in the UK during the 1960s to describe scientists emigrating to America — proof that even talent can flow down the same pipes as water.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of drain
The verb "drain" comes from Old English "dreahnian," meaning to draw off liquid, which itself derives from the Old English noun "dreah," related to drying. It shares a Germanic root with words like "dry" and "drought." The noun sense of a channel for carrying off water developed from the verb. Cognates include "dry" and "drought," all tracing back to a Proto-Germanic root relating to dryness or drawing off moisture.
Related word forms
How drain is actually used
Common in both formal and informal registers. The figurative use — draining energy, money, or morale — is very common and often carries a negative connotation of gradual depletion rather than sudden loss.
Easily confused with drain
A train is a connected series of railway vehicles or a sequence of thoughts, whereas a drain is a channel for removing liquid.
To strain is to stretch tightly or filter through effort, while to drain is to empty liquid or deplete resources.