sideroom

English

Noun

sideroom (plural siderooms)

1. A secondary room adjoining a main one.
   • 1861, E. J. Guerin, Mountain Charley, page 21:

     I started down stairs. I nearly reached the top I heard voices below, and had hardly time to step within a doorway leading to a side-room when Rice and W----- entered and passed on a run towards my room.