/dɹeɪn/
noun
A conduit allowing liquid to flow out of an otherwise contained volume; a plughole (UK)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.Something consuming resources and providing nothing in return.An act of urination.One terminal of a field effect transistor (FET).An outhole.A drink.verb
To lose liquid.To flow gradually.To cause liquid to flow out of.To convert a perennially wet place into a dry one.To deplete of energy or resources.To draw off by degrees; to cause to flow gradually out or off; hence, to exhaust.To filter.To fall off the bottom of the playfield.