waste-pipe

n pipe that carries away water which has been used or is not needed, eg dirty water from a sink, bath, etc 污水管; 废水管.

Washington, Washington D.C., washroom, washtub, washwoman, washy, wasn't, wasp, WASP (also Wasp), wasp-waisted, waspish, waspishly, waspishness, wassail, wastage, waste, waste on, waste product, waste-basket (also `waste-bin), waste-paper, wasteful, wastefully, wastefulness, wasteland, waster, wastrel, watch, watch out for, watch over, watch-dog, watch-night service, watch-strap (Brit) (US `watch-band), watch-tower, watchdog, watcher, watchful, watchfully, watchfulness, watching brief, watchmaker,