An ornately decorated ceiling.
French, from plat ‘flat’ + fond ‘bottom, base’.
“The moment you walked in, the stunning plafond drew your eye upwards”
An antechamber, hall, or lobby next to the outer door of a building.
Early 17th century (denoting the space in front of the main entrance of a classical Roman or Greek building): from French, or from Latin vestibulum ‘entrance court’.