outfall

n place where water falls or flows out (of a lake, river, etc); outlet （湖、 河等的）出水口.

outbid, outboard motor, outbreak, outbuilding, outburst, outcast, outcaste, outclass, outcome, outcrop, outcry, outdated, outdistance, outdo, outdoor, outdoors, outer, outer space, outermost, outface, outfield, outfielder, outfight, outfit, outfitter, outflank, outflow, outfox, outgoing, outgoings, outgrow, outgrowth, outhouse, outing, outland, outlandish, outlandishly, outlandishness, outlast, outlaw,