drain (something) off to (do something)(redirected from drain off to do something)
drain (something) off to (do something)
To cause a liquid to flow off or out of something in order to allow some particular action to occur. Drain some of that excess water off to free up some more space in the pot for the other ingredients. The doctor began draining off blood to relieve some pressure from the swollen arm..
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.