[Rus.sia leather] n [Russia, Europe] (1658): leather made by tanning various skins with willow, birch, or oak and then rubbing the flesh side with a phenolic oil distilled from a European birch--called also Russia calf
RUSSIA LEATHER
Meaning of RUSSIA LEATHER in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012