Subway (5)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">subway</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that subway can be written as metro)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for metro that I've seen before include "Parisian underground system" , "Parisian underground railway" , "Urban railway system" , "what moves many Parisians" , "The Paris Underground transport system" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">subway</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that Underpass is a subway)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for underpass that I've seen before include "way below the level of others making progress" , "Tunnel beneath a road" , "way across road?" .)