cavaedium

(Posticum) was the name given to the little door, leading from the back of the cavaedium or peristyle to the street.

The dining-room, as well as the study of the master of the house, were in the cavaedium.

This floor is remarkably slippery for a respectable cavaedium.

These are described by Vitruvius under the title of cavaedium.

I must now tell how this may be brought about, and first I will speak of the proper construction of a cavaedium.