from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A stoppered container, usually made of plastic or rubber, that is filled with hot water and applied to a part of the body for warmth. Also called hot-water bag.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a stoppered receptacle (usually made of rubber) that is to be filled with hot water and used for warming a bed or parts of the body
Sorry, no etymologies found.