Lewis & Short

consistōrĭum, ii, n. [consisto] (postclass.), a place of assembly.

  1. I. In gen., prop. of the earth, as a dwelling-place of man, Tert. Res. Carn. 26.
    1. B. Trop.: consistorium libidinum lupanar, id. ad Uxor. 2, 6; id. Spect. 17.
  2. II. Esp.
    1. A. A room where servants wait, Sid. Ep. 2, 2.
      But most usually,
    2. B. The place where the emperor’s council met, the emperor’s cabinet, Aus. Grat. Act. 29; Amm. 14, 7, 11; Cod. Th. 6, 10, 2; Inscr. Orell. 3184 al.