(n.) A colonnade or covered ambulatory, especially in classical styles of architecture; usually, a colonnade at the entrance of a building.

access aisle alley ambulatory aperture arcade artery atlas avenue caryatid channel cloister colonnade colonnette column communication conduit connection corridor covered way defile entrance entrance hall entranceway entry entryway exit ferry ford foyer galilee gallery inlet interchange intersection junction lane lobby narthex opening outlet overpass pass passage passageway peristyle pier pilaster pillar porch portal post propylaeum railroad tunnel stoa telamon threshold traject trajet tunnel underpass veranda vestibule