Spanish square (5)
I believe the answer is:
plaza
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">spanish square</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 plaza that I've seen before include "Public square, in Italy" , "Open urban square or public area" , "Public square, as in Spanish town" , "Public square or market" , "Sp. square, market-place" .)