water back

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noun

a reservoir or arrangement of tubing at the back of certain stoves or fireplaces for containing water to be heated by the fire.

Origin of water back

An Americanism dating back to 1860–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for water back

water back

noun

the US name for back boiler

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