Translated from Russian in 2020 by Oleg Belyaev (ed.), Irina Khomchenkova, Julia Sinitsyna and Vadim Dyachkov.
подкладка
lining
подкладка на спине (у черкески и пр.)
lining on the back (of a Circassian coat, etc.)
подкладка
стлать
подстилка
lining
to spread
underlay