(~s)
A ~ is a large underground channel that carries waste matter and rain water away, usually to a place where it is treated and made harmless.
...the city’s ~ system.
...open ~s.
N-COUNT
(~s)
A ~ is a large underground channel that carries waste matter and rain water away, usually to a place where it is treated and made harmless.
...the city’s ~ system.
...open ~s.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012