Waste pipe (5)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">waste pipe</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for drain that I've seen before include "Waste channel" , "Waste channel/pipe" , "Bleed" , "Drink dry" , "Something using up resources" .)
(Other definitions for sewer that I've seen before include "Plier of needle; drain" , "It drains" , "Channel to carry away waste water and matter" , "Waste-pipe" , "Pipe for waste matter from houses, factories etc" .)