'Propylaeum' definitions:

Definition of 'Propylaeum'

From: GCIDE

Propylaeum \Prop`y*l[ae]"um\, n.; pl. Propyl[ae]a. [L., fr. Gr. ?; ? before + ? a gate.] (Anc. Classical Arch.) Any court or vestibule before a building or leading into any inclosure. [1913 Webster]