noun.
A liquor consisting of honeydiluted in water; mead prior to fermentation.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
honey diluted in water; becomes mead when fermented
Word Usage
"If you wish to ascertain if a woman be with child, give her hydromel to drink when she is going to sleep, and has not taken supper, and if she be seized with tormina in the belly, she is with child, but otherwise she is not pregnant."