Colonnade (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">colonnade</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for arcade that I've seen before include "Covered passage containing shops" , "Shopping passage" , "Covered way with shops on either side" , "where 'penny' often drops" , "shopping precinct" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">colonnade</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for portico that I've seen before include "covered area" , "Classical porch" , "Posh covered entrance to building" , "Covered porch with supporting columns" , "Grand porch" .)