Noun
A vessel for holding hot water in which another vessel may be heated without scorching its contents; -- used for warming or preparing food or pharmaceutical preparations.
Source: Webster's dictionarybain marie
Alternatives A contemporary alternative to the traditional, liquid-filled bain-marie is the electric "dry-heat" bain-marie, heated by elements below both pots. Source: Internet
It should then be reduced until the sauce is quite thick, passed through a chinois strainer into a bain-marie and have added two tablespoons of cream. Source: Internet
Under the outer container of the bain-marie (or built into its base) is a heat source. Source: Internet