literature that is an end in itself and is not practical or purely informative. The term can refer generally to poetry, fiction, drama, etc., or more specifically to light, entertaining, sophisticated literature. It is also often used to refer to literary studies, particularly essays. The word is French and literally means "beautiful letters."
BELLES LETTRES
Meaning of BELLES LETTRES in English
Britannica English vocabulary. Английский словарь Британика. 2012