Hypertext Webster Gateway: "portico"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Portico \Por"ti*co\, n.; pl. {Porticoes}or {Porticos}. [It., L.
porticus. See {Porch}.] (Arch.)
A colonnade or covered ambulatory, especially in classical
styles of architecture; usually, a colonnade at the entrance
of a building.
From WordNet (r) 1.7 (wn)
portico
n : a porch or entrance to a building consisting of a covered
and often columned area
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