A tube inserted into a wound or cavity to facilitate fluid removal.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Examples from the Web for drainage tube
Historical Examples of drainage tube
If much bagging takes place, the use of a drainage-tube will prove quite sufficient.
He generally made a counter-opening behind to get rid of discharges, and inserted a drainage-tube.