This is the 7477th most frequent Russian word.
дворянская
"Noble" or "pertaining to nobility."
The word 'дворянская' describes the family pertaining to nobility.
Дворянская семья проживала в старинном замке.
The noble family resided in the old castle.
The word 'дворянской' modifies 'жизни,' referring to the life associated with nobility.
Он читал роман о дворянской жизни в XVIII веке.
He was reading a novel about the noble life in the 18th century.
The word 'дворянской' describes 'культуры,' indicating culture linked to nobility.