1) Certain pipes 2) Continuous expenditures 3) Deprives of strength 4) Draws off 5) Draws off gradually 6) Empties 7) Empties out 8) Empties the tub 9) Filters 10) Flood deterrents 11) Goes down the tube 12) Important tub features 13) Places for plugs 14) Pulls the plug on 15) Saps 16) Sewers 17) Shower outlets 1) Depletes 2) Eaves 3) Empties 4) Enervates 5) Exhausts 6) Saps 7) Sewers 
A generic terms used for sewers, stormdrains and combined systems.