WordReference Random House Unabridged Dictionary of American English © 2026
wa′ter ham′mer, 
  1. Buildingthe concussion and accompanying noise that result when a volume of water moving in a pipe suddenly stops or loses momentum.
  • 1795–1805

Collins Concise English Dictionary © HarperCollins Publishers::
water hammer n
  1. a sharp concussion produced when the flow of water in a pipe is suddenly blocked
'water hammer' also found in these entries (note: many are not synonyms or translations):
alleviator

Forum discussions with the word(s) "water hammer" in the title:


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