(idiomatic) To be in rapid decline or a state of downfall, especially as leading to inevitable utter failure or destruction.

(transitive) To drain the surface of (a field, farm, etc.).

simple past tense and past participle of top-drain

present participle of top-drain

Alternative form of drainplug

(US) An access point or conduit for rainwater that drains directly downstream in a (drainage) basin without going through sewers or water treatment in order to prevent or belay floods

(agriculture) A drain made by laying under earth the sprays or small branches of trees, which keep passages open.

A drain or vent for water, somewhat like a well or pit, serving to discharge the water of wet land. / A drain conducting to a well or pit.

A fly whose larvae live in decaying organic matter underwater, most notably on the inside of drains, Clogmia albipunctata and similar species.

A pan for collecting the condensate and funneling it to the drain line.