Lewis Short
prŏthyra (noun N) = πρόθυρα: .
* In a Grecian house, the space before the door, the vestibule, Vitr. 6, 10.
* In a Roman house, a railing or wicket before the door, the Gr. διάθυρα, Vitr. 6, 10.
Charlton T. Lewis, Charles Short, A Latin Dictionary