Churchillian symbol (1,4)
I believe the answer is:
v sign
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">churchillian symbol</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for v sign that I've seen before include "Winning indication" , "Offensive gesture" , "Obscene gesture" , "Rude gesture" , "Gesture (from Winston or Harvey?)" .)