subdrain

== English == === Etymology === From sub- +‎ drain. === Noun === subdrain (plural subdrains) A drain below the surface of the ground. ==== Related terms ==== subdrainage === Verb === subdrain (third-person singular simple present subdrains, present participle subdraining, simple past and past participle subdrained) (transitive) To drain below the surface. === Anagrams === unbraids