'Conference room' definitions:

Definition of 'conference room'

noun

A room in which a conference can be held

From: GCIDE

Conference \Con"fer*ence\, n. [F. conf['e]rence. See Confer.]
1. The act of comparing two or more things together; comparison. [Obs.] [1913 Webster]
Helps and furtherances which . . . the mutual conference of all men's collections and observations may afford. --Hocker. [1913 Webster]
2. The act of consulting together formally; serious conversation or discussion; interchange of views. [1913 Webster]
Nor with such free and friendly conference As he hath used of old. --Shak. [1913 Webster]
3. A meeting for consultation, discussion, or an interchange of opinions. [1913 Webster]
4. A meeting of the two branches of a legislature, by their committees, to adjust between them. [1913 Webster]
5. (Methodist Church) A stated meeting of preachers and others, invested with authority to take cognizance of ecclesiastical matters. [1913 Webster]
6. A voluntary association of Congregational churches of a district; the district in which such churches are. [1913 Webster]
Conference meeting, a meeting for conference. Specifically, a meeting conducted (usually) by laymen, for conference and prayer. [U. S.]
Conference room, a room for conference and prayer, and for the pastor's less formal addresses. [U. S.] [1913 Webster]