a bag, usually of rubber, for holding hot water to apply warmth to some part of the body, as the feet.
Also called hot-water bottle.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for hot-water bottle
Historical Examples of hot-water bottle
a receptacle, now usually made of rubber, designed to be filled with hot water, used for warming a bed or parts of the body
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