Type of necktie (5)
I believe the answer is:
ascot
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">type of necktie</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 ascot that I've seen before include "track" , "somewhere in Berks" , "Racecourse, home to the Gold Cup since 1807" , "Berkshire race course" , "racing centre" .)