Habitual gesture (9)
I believe the answer is:
mannerism
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">habitual gesture</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 mannerism that I've seen before include "Habitual gesture" , "Italian art?" , "Habitual way of behaving" , "Idiosyncrasy" , "Distinctive personal way of doing something" .)