Catwalk (6)
I believe the answer is:
runway
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">catwalk</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for runway that I've seen before include "takeoff point" , "Airstrip" , "Strip on which planes take off and land" , "Take-off tarmac" , "Track for takeoff and landing" .)