1) Ancient Roman title 2) Byzantine palace office 
Latin, meaning: bed-chamber servant, chamberlain. 
Cubicularius, Hellenized as koubikoularios (κουβικουλάριος), was a title used for the eunuch chamberlains of the imperial palace in the later Roman Empire and in the Byzantine Empire. The feminine version, used for the ladies-in-waiting of the empresses, was koubikoularia (Greek: κουβικουλαρία). ==History== The term deri...
bed-chamber servant, chamberlain.