- a fireplug; hydrant.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for water plug
The water-plug being left in solitude, its overflowings suddenly congealed, and turned to misanthropic ice.A Christmas Carol
Hydrant, hī′drant, n. a machine for discharging water: a water-plug.
The water-plug being left in solitude, its overflowings sullenly congealed, and turned to misanthropic ice.Journeys Through Bookland, Vol. 6
Charles H. Sylvester