- drain
- 1
verb
1 LIQUIDa) (T) to make the water or liquid flow away from something: Can you drain the spaghetti, please? | Deep ditches were dug to drain the fields. | drain sth from sth: Brad drained all the oil from the engine. | well/poorly etc drained: Carrots grow best in a well drained soil.b) (I) if liquid drains, it flows away(+ away): I watched the bath water drain away.c) (I) if something drains, the liquid that is in it or on it flows away and it becomes dry: Open ditches drain very efficiently.2 drain a glass/cup etc to drink all the liquid in a glass, cup etc: Hannah drained her mug in one gulp.3 USE TOO MUCH (T) to use too much of something so that there is not enough left: Huge imports were draining the country's currency reserves. | drain sb/sth of sth: Our country is being drained of many of its best scientists.4 MAKE TIRED (T) to make someone feel very tired and without any energy: Working with sick children every day really drains you.5 COLOUR (intransitive always + adv/prep) if the colour drains from your face, your skin becomes very pale usually because you are frightened or shocked(+ from/away etc): All the colour had drained from Zelda's cheeks.6 BE REDUCED (intransitive always + adv/prep) to gradually be reduced(+ away/out of etc): The family's wealth has slowly drained away. drain sth off phrasal verb (T) to make water or a liquid flow off something, leaving it dry: Leave to simmer for 40 minutes then drain off the stock. 2 noun (C)1 especially BrE a pipe that carries water or waste liquids away: blocked drains: The drains were blocked and the streets were full of water.2 the frame of metal bars over a drain where water etc can flow into it: Clear the leaves out of the drain.3 a drain on sth something that continuously uses time, money, strength etc: Not having anybody to rent my room is a serious drain on my financial resources.4 down the drain informal wasted or having no result: The fire meant two years' hard work down the drain.—see also: brain drain
Longman dictionary of contemporary English. 2004.