Water-Hammer is a 12 letter English word. It's valid Scrabble word worth 8 points. It's valid Words with friends word worth 8 points.
You can make 347 anagrams from letters in water-hammer (-aaeehmmrrtw).
First recorded in 1795-1805
If air cushions were not provided, the "water hammer" would frequently crack or break the pipes.
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