Carport (6)
I believe the answer is:
garage
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">carport</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 garage that I've seen before include "lock-up?" , "Source of 4 dn or 16 dn" , "Car's home (or hospital?)" , "Building for housing automobiles" , "Car repair shop" .)