Pennant (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pennant</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 flag that I've seen before include "Iris; ensign" , "Rectangular piece of fabric used as a signalling device" , "Standard; tire" , "Become limp" , "Iris - paving slab" .)
(Other definitions for race that I've seen before include "Care about contest" , "Speed competition" , "Contest; nation" , "Breed" , "People; run" .)