If you drain something, you remove the liquid from it, usually by pouring it away or allowing it to flow away, and if something drains, liquid flows away or out of it:

The meaning of DRAIN is to draw off (liquid) gradually or completely. How to use drain in a sentence.

DRAIN definition: to withdraw or draw off (a liquid) gradually; remove slowly or by degrees, as by filtration. See examples of drain used in a sentence.

To or into the condition of being wasted or lost: All of our best laid plans are down the drain.

Look up drain in Wiktionary, the free dictionary.

drain /dreɪn/ v. to empty by drawing off liquid: [~ + object] to drain a swamp. [~ + object (+ of + object)] Drain the wound (of blood) before you apply the bandage. [no object] The crankcase …

Dec 6, 2025 · The vortex is a spinning, cyclonic mass of fluid, which can be observed in the rotation of water going down a drain, as well as in smoke rings, tornados and hurricanes.