A water main is the large pipe supplying a district with water. Repair the water main.
A great deal of the network is Victorian and leaks about a fifth of what goes into it. A burst water main can take out a road and several thousand homes at once.
1nounwater mainThe large pipe supplying a district with water.
“The water main went at four in the morning and the street was a river.”
water main is a pipe.
Practised in In the City