counterdrain

noun, verb — 3 senses

noun

Etymology From counter- + drain.

A drain at the foot of the embankment of a canal or watercourse, for carrying off the water that may soak through.

Medicine, Sciences, Surgery An inserted device or other means by which excess fluid is drained off from a part of the body in which it accumulates.

verb

Etymology From counter- + drain.

Medicine, Sciences, Surgery To drain off excess fluid from a part of the body in which it accumulates.

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.