Source : Webster's Revised Unabridged Dictionary (1913)

Samovar \Sa"mo*var\, n. [Russ. samovar'.]
   A metal urn used in Russia for making tea. It is filled with
   water, which is heated by charcoal placed in a pipe, with
   chimney attached, which passes through the urn.

Source : WordNet®

samovar
     n : a metal urn with a spigot at the base; used in Russia to
         boil water for tea