RUSSIAS
Proper noun
Russias
(chiefly, historical) The East Slavic states descended from the Rus collectively, typically including Russia (Great Russia), Belarus (White Russia) and Ukraine (Little Russia or Kievan Russia); the Russian Empire. Especially in the title "Emperor (or Tsar or Czar) of All the Russias."
Source: Wiktionary
RUSSIA
Rus"sia, n.
Definition: A country of Europe and Asia. Russia iron, a kind of sheet iron
made in Russia, having a lustrous blue-black surface.
– Russia leather, a soft kind of leather, made originally in Russia
but now elsewhere, having a peculiar odor from being impregnated with
an oil obtained from birch bark. It is much used in bookbinding, on
account of its not being subject to mold, and being proof against
insects.
– Russia matting, matting manufactured in Russia from the inner
bark of the linden (Tilia Europæa).
Source: Webster’s Unabridged Dictionary 1913 Edition