What is referred to by 'a drain'?

Based on the clue 'a downtown area of this major city is named for th...', what is the answer? Based on the clue 'a dozen us counties are named for this 19th centur...', what is the answer? Based on the clue 'a dpt shot protects against diptheria tetanus per...', what is the answer? Based on the clue 'a drain hose on this such as a kenmore may connect...', what is the answer? Based on the clue 'a drama form of the time was the comedy of these l...', what is the answer? Based on the clue 'a drama given annually about the dares their fell...', what is the answer? Based on the clue 'a drama straight from the tabloids blared the time...', what is the answer? Based on the clue 'a dramatic piece of reportage on this card game sa...', what is the answer?