drain

dreɪn

verb

cause the water or other liquid in (something) to run out, leaving it empty or dry.

we drained the swimming pool

empty (out),remove the contents of,void,clear (out),unload,evacuate

noun

a channel or pipe carrying off surplus liquid, especially rainwater or liquid waste.

sewer,channel,conduit,ditch,culvert,duct,pipe,tube,gutter,groove,furrow,trough,trench,cut,sluice,spillway,race,flume,chute