the concussion and accompanying noise that result when a volume of water moving in a pipe suddenly stops or loses momentum.
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How to use water hammer in a sentence
Scientists have given this apparatus the name of the water-hammer.In Search of a Son | William Shepard Walsh
If air cushions were not provided, the "water hammer" would frequently crack or break the pipes.Physics | Willis Eugene Tower
It should be borne in mind that there is no water-hammer on this line.
The water-hammer, as it is termed, illustrates this apparent contradiction.
British Dictionary definitions for water hammer
a sharp concussion produced when the flow of water in a pipe is suddenly blocked
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012