The term 'Narthex' is a seven-letter word that is used to describe the Church Vestibule. It is derived from the Greek word 'narthex', which means 'entrance hall'. The Narthex is the entrance area of a church, typically located at the front of the building. It is usually a large, open space that serves as a gathering place for people before and after services. It may also contain a small chapel or other religious artifacts.