hot-water bag is a noun meaning "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". It carries one recorded sense.
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
Definitions, synonyms and semantic relations for hot-water bag come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.