Open carriage (6)
I believe the answer is:
landau
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">open carriage</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for landau that I've seen before include "Transport" , "Horse-drawn carriage or car with folding top" , "An auld type of carriage" , "Old four-wheeled covered carriage" , "Four-wheeled horse-drawn carriage" .)