Meaning

noun a covered passageway with shops and stalls on either side

noun a structure composed of a series of arches supported by columns

originEtymology tree Proto-Indo-European *h₂erkʷ- Proto-Indo-European *h₂erkʷos Proto-Italic *arkuos Latin arcus Italian arcatabor. French arcadeubor. English arcade Unadapted borrowing from French arcade, from Italian arcata (“the arch of a bridge”), from Latin arcus (“an arc”). Not etymlogically related to Arcadia.

Etymology from Wiktionary, CC BY-SA 3.0