-narthex-

‖n. [ L., giant fennel, Gr. na`rqhx. ] 1. (Bot.) A tall umbelliferous plant (Ferula communis). See Giant fennel, under Fennel. [ 1913 Webster ]

2. (Arch.) The portico in front of ancient churches; sometimes, the atrium or outer court surrounded by ambulatories; -- used, generally, for any vestibule, lobby, or outer porch, leading to the nave of a church. [ 1913 Webster ]