Recessus is a Latin word that refers to a space that is set back or a recess. There are several synonyms that can be used to describe this type of area. One of the first synonyms that comes to mind is alcove. An alcove is a recess in a wall that is often used for storage or decoration purposes. Another synonym for recessus is niche, which refers to a small area that is set apart for a specific purpose. A third synonym for recessus is cavity, which refers to a hollow space within an object or body. Other synonyms for recessus include compartment, cranny, crevice, nook, and slot.