chamber

1 an area within a building that has been set apart from surrounding space by a wall the inner chamber is the president's private office Synonyms apartment, cell, room, closetRelated Words accommodation, bay, berth, booth, cabin, compartment, cubicle; alcove, niche, nook, recess; snuggery [chiefly British]

2 one of the parts into which an enclosed space is divided if the camera doesn't work, check to see that the battery has been properly installed in its chamber Synonyms bay, cabin, cell, compartment, cube, cubicleRelated Words cubbyhole, pigeonhole, snuggery [chiefly British]; alcove, niche, nook, recess; cabinet, drawer, locker; cavity, hole, hollow; booth, box, crib, loge, stall; bunker, crypt, vault

3 a group of persons formally joined together for some common interest joined the local chamber of commerce Synonyms board, brotherhood, association, club, college, congress, consortium, council, fellowship, fraternity, guild (also gild), institute, institution, league, order, organization, society, sodalityRelated Words collective, commune, community, cooperative; alliance, bloc, camp, coalition, partnership; body, cadre, group; circle, clan, clique, coterie, junta, junto, klatch (also klatsch), lot, set; crew, outfit, party, squad, team; branch, chapter, local; faithful, fold, membership; sisterhood, sorority; cabal, camarilla, camorra, confederacy, conspiracy; band, gang, ring; cartel, combine, syndicate