i think i prefer this as it was before.  see e.g. kojien:
1) 建築物で、柱列上に同型のアーチが連続したもの。街路に沿って、または中庭に面して設けられ、通路をなす。
2) 上に屋根をおおいかぶせた商店街。
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then gg5
 an arcade; a covered [an arcaded] street.
 アーケード街 a shopping arcade; a covered shopping street.
 アーケード·ゲーム 〔ゲームセンターの〕 an arcade game.
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then see the english definition for "arcade"
arcade |ärˈkād|
noun
1 a covered passageway with arches along one or both sides.
• a covered walk with stores along one or both sides.
• Architecture a series of arches supporting a wall, or set along it.
2 short for video arcade.
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the great majority of google image hits are indeed shopping arcades, but the defining feature of the results is certainly an arched roof.  so i'm content to leave this pretty much as it was.

@@ -13,1 +13,1 @@
-<gloss>arcade (esp. a covered shopping arcade)</gloss>
+<gloss>arcade (street)</gloss>

大辞林

Specify “covered shopping arcade” – these seem defining.
(Saw this evening)

@@ -13,1 +13,1 @@
-<gloss>arcade</gloss>
+<gloss>arcade (esp. a covered shopping arcade)</gloss>