antechamber
noun /ˈæntitʃeɪmbə(r)/
/ˈæntitʃeɪmbər/
(formal) (also anteroom)
- a room where people can wait before entering a larger room, especially in an important public buildingWord Originmid 17th cent. (as antichamber): from French antichambre, from Italian anticamera, from anti- ‘preceding’ + camera ‘vault, arched chamber’, from Greek kamara ‘object with an arched cover’.