- the concussion and accompanying noise that result when a volume of water moving in a pipe suddenly stops or loses momentum.
Origin of water hammer
First recorded in 1795–1805
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for water hammer
Scientists have given this apparatus the name of the water-hammer.In Search of a Son
William Shepard Walsh
The water-hammer, as it is termed, illustrates this apparent contradiction.
It should be borne in mind that there is no water-hammer on this line.
- a sharp concussion produced when the flow of water in a pipe is suddenly blocked