Nār'thex, n.

n. [Lat. narthex, from Gr. νάρθηξ.] 1. (Bot.) A tall, umbelliferous plant, having a tinder-like pith, employed by the ancients for carrying fire, and said to be still so used by the modern Greeks; Ferula. See FERULA.

2. (Med.) A collection of medical formulas or receipts; a formulary. Dunglison.
3. (Arch.) The portico in front of ancient churches, usually entered by three doors from the outer porch, and admitting by three other doors into the nave and the aisles on each side.