Lewis & Short

cŭbĭcŭlum (cŭbīclum, per sync., Mart. 10, 30, 17 dub.), i, n. [cubo], an apartment for reclining or (more freq.) for sleeping (cf. cubo), a resting- or sleepingchamber, a bedchamber.

  1. I. Prop., Plaut. Most. 3, 2, 7; Serv. Galba ap. Cic. de Or. 2, 65, 263; Cic. Verr. 2, 3, 23, § 56; Plin. Ep. 1, 3, 1; Quint. 10, 3, 25; Tac. A. 14, 44; Suet. Caes. 49: Lares cubiculi, Suet. Dom. 17; id. Aug. 7 Roth ex conj. Lips.; v. cubicularius init.
  2. II. Transf.
    1. A. The elevated seat of the emperor in the theatre, Suet. Ner. 12; Plin. Pan. 51, 4.
    2. * B. In arch., a joint, groove of a stone, its bed, Vitr. 2, 8; cf. cubile, I. B.