Definition of morceau de salon in English:

morceau de salon

Pronunciation /mɔːˌsəʊ də saˈlɒ̃/ /mɔːˌsəʊ də saˈlɒn/

noun

Music
  • A well-known tune elaborated by variations, etc.

Origin

Mid 19th century; earliest use found in Elizabeth Gaskell (1810–1865), novelist and short-story writer. From French morceau de salon, lit. ‘salon piece’ from morceau + de + salon.