sam·o·var noun \ˈsa-mə-ˌvär\
1: an urn with a spigot at its base used especially in Russia to boil water for tea
2: an urn similar to a Russian samovar with a device for heating the contents
Russian, from samo- self + varit' to boil
First Known Use: 1830
Here's a decorated electric one:
(The original samovars, of course, were heated with coals)
There's even a Russian saying, "To go to Tula with your own samovar" (Tula is a city which used to be famous for manufacturing samovars), akin to the English saying, "to carry coals to Newcastle".