Other forms: chambers
A chamber is a room set aside for a purpose, or a hollow space. The council chamber, a burial chamber, the chamber of the heart.
It is formal or technical and rarely used of ordinary rooms. Chamber music is written for a small group in a room rather than a hall. The heart has four chambers. Note that camera is the same Latin word — a camera obscura was a dark room, and the photographic sense came from that.
1nounchamberA room set aside for a purpose.
“Archaeologists found the king's burial chamber deep inside the pyramid.”
2nounhollowA hollow space inside something.
“The human heart has four chambers that pump blood around the body.”
Too few real examples of this word to estimate which sense is commonest.
chamber is a room, or a cavity.
Latin camera means a vaulted chamber, from Greek kamara. Camera and comrade come from the same room.
Ancient Greek
καμάρα — vaulted chamber
Latin
camera
Old French
chambre
Middle English
chambre
English, today
chamber
From Middle English chambre, borrowed from Old French chambre, from Latin camera, from Ancient Greek καμάρα (“vaulted chamber”). a doublet of camera.
Etymology from Wiktionary, CC BY-SA