usually means a sleeping and dwelling
room in a Roman house [DOMUS
but also applied to the pavilion or box in which the Roman emperors were
accustomed to witness the public games. (Suet. Nero
; Plin. Paneg.
51.) It appears to have been so
called, because the emperors were accustomed to recline in the cubicula,
instead of sitting, as was anciently the practice, in a sella curulis.
(Ernesti, ad Suet. l.c.