baize door

plural baize doors

1. historicalA door with a baize surface attached to deaden noise, traditionally separating the servants' quarters from the main part of a house.

   1 more example

   Through the french windows they went, into the drawing room where Miss Cecily looked up in surprise from her book; through the baize door into the world that had always before welcomed her so happily. Mr Parkinson marched her straight into the kitchen, to the astonishment of Matchett, Sarah and the kitchen maid, who were seated round the table Jess herself had laid with such care.

   1967, Barbara Sleigh, Jessamy, Sevenoaks, Kent: Bloomsbury, published 1993, →ISBN, page 84