'accubitum' originates from Latin, specifically the word 'accubitum', where 'ac-' meant 'toward' and 'cubitum' meant 'to lie down.'

'accubitum' was used in Latin to describe a reclining seat, and this term was directly adopted into English with the same meaning.

Initially, it meant 'a place to lie down,' and this meaning has largely remained the same in modern usage.