Ref (3)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ref</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 taxi that I've seen before include "Prepare to take off" , "Motor vehicle by rank?" , "Hackney carriage" , "Motor vehicle for hire with driver" , "type of vehicle" .)