Webster's Revised Unabridged Dictionary · 1913

Piazza

Piazza , noun

[Italian, place, square, market place, Latin platea street, courtyard. See Place.]

(Architecture) An open square in a European town, especially an Italian town; hence (Architecture), an arcaded and roofed gallery; a portico. In the United States the word is popularly applied to a veranda.
We walk by the obelisk, and meditate in piazzas. — Jer. Taylor